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3142431531 = 3561211997
BaseRepresentation
bin1011101101001101…
…1011001100101011
322010000001001200000
42323103123030223
522413430302111
61235453114043
7140605140651
oct27323331453
98100031600
103142431531
111372903358
12738488923
133b1063555
1421b4c0dd1
15135d2ac56
hexbb4db32b

3142431531 has 24 divisors (see below), whose sum is σ = 4784370864. Its totient is φ = 2060601120.

The previous prime is 3142431499. The next prime is 3142431547. The reversal of 3142431531 is 1351342413.

It is a happy number.

3142431531 is a `hidden beast` number, since 314 + 2 + 4 + 315 + 31 = 666.

It is not a de Polignac number, because 3142431531 - 25 = 3142431499 is a prime.

It is a super-3 number, since 3×31424315313 (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 3142431495 and 3142431504.

It is not an unprimeable number, because it can be changed into a prime (3142431031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 91176 + ... + 120821.

It is an arithmetic number, because the mean of its divisors is an integer number (199348786).

Almost surely, 23142431531 is an apocalyptic number.

3142431531 is a deficient number, since it is larger than the sum of its proper divisors (1641939333).

3142431531 is an equidigital number, since it uses as much as digits as its factorization.

3142431531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212073 (or 212061 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 3142431531 is about 56057.3949715825. The cubic root of 3142431531 is about 1464.7222358535.

Adding to 3142431531 its reverse (1351342413), we get a palindrome (4493773944).

The spelling of 3142431531 in words is "three billion, one hundred forty-two million, four hundred thirty-one thousand, five hundred thirty-one".

Divisors: 1 3 9 27 61 81 183 243 549 1647 4941 14823 211997 635991 1907973 5723919 12931817 17171757 38795451 51515271 116386353 349159059 1047477177 3142431531