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2142230331 = 31395137243
BaseRepresentation
bin111111110101111…
…1101011100111011
312112021222120120010
41333223331130323
513341402332311
6552323233003
7104041441323
oct17753753473
95467876503
102142230331
119aa26239a
124b9518763
13281a85917
14164720283
15c8109da6
hex7fafd73b

2142230331 has 8 divisors (see below), whose sum is σ = 2876856640. Its totient is φ = 1417878792.

The previous prime is 2142230323. The next prime is 2142230341. The reversal of 2142230331 is 1330322412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2142230331 - 23 = 2142230323 is a prime.

It is a super-2 number, since 2×21422303312 = 9178301582112739122, 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 = 2142230298 and 2142230307.

It is not an unprimeable number, because it can be changed into a prime (2142230341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2568205 + ... + 2569038.

It is an arithmetic number, because the mean of its divisors is an integer number (359607080).

Almost surely, 22142230331 is an apocalyptic number.

2142230331 is a deficient number, since it is larger than the sum of its proper divisors (734626309).

2142230331 is a wasteful number, since it uses less digits than its factorization.

2142230331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5137385.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 2142230331 is about 46284.2341515985. The cubic root of 2142230331 is about 1289.1062717687.

Adding to 2142230331 its reverse (1330322412), we get a palindrome (3472552743).

The spelling of 2142230331 in words is "two billion, one hundred forty-two million, two hundred thirty thousand, three hundred thirty-one".

Divisors: 1 3 139 417 5137243 15411729 714076777 2142230331