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3144243431 = 716323311827
BaseRepresentation
bin1011101101101001…
…0101100011100111
322010010110010010102
42323122111203213
522414411242211
61240000014315
7140626425320
oct27332254347
98103403112
103144243431
11137393069a
1273900139b
133b1549194
1421b833447
15136087a3b
hexbb6958e7

3144243431 has 16 divisors (see below), whose sum is σ = 3631290624. Its totient is φ = 2666810304.

The previous prime is 3144243409. The next prime is 3144243439. The reversal of 3144243431 is 1343424413.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 3144243431 - 210 = 3144242407 is a prime.

It is a super-2 number, since 2×31442434312 = 19772533506773303522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3144243394 and 3144243403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3144243439) 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 15 ways as a sum of consecutive naturals, for example, 259940 + ... + 271766.

It is an arithmetic number, because the mean of its divisors is an integer number (226955664).

Almost surely, 23144243431 is an apocalyptic number.

3144243431 is a deficient number, since it is larger than the sum of its proper divisors (487047193).

3144243431 is a wasteful number, since it uses less digits than its factorization.

3144243431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12230.

The product of its digits is 13824, while the sum is 29.

The square root of 3144243431 is about 56073.5537575424. The cubic root of 3144243431 is about 1465.0036973352.

Adding to 3144243431 its reverse (1343424413), we get a palindrome (4487667844).

The spelling of 3144243431 in words is "three billion, one hundred forty-four million, two hundred forty-three thousand, four hundred thirty-one".

Divisors: 1 7 163 233 1141 1631 11827 37979 82789 265853 1927801 2755691 13494607 19289837 449177633 3144243431