2312431031 has 4 divisors (see below), whose sum is σ = 2318630952. Its totient is φ = 2306231112.

The previous prime is 2312430997. The next prime is 2312431049. The reversal of 2312431031 is 1301342132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2312431031 - 2¹⁰ = 2312430007 is a prime.

It is a super-2 number, since 2×2312431031² = 10694674546263445922, 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 = 2312430994 and 2312431012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2312431091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3099401 + ... + 3100146.

It is an arithmetic number, because the mean of its divisors is an integer number (579657738).

Almost surely, 2^2312431031 is an apocalyptic number.

2312431031 is a deficient number, since it is larger than the sum of its proper divisors (6199921).

2312431031 is an equidigital number, since it uses as much as digits as its factorization.

2312431031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6199920.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 2312431031 is about 48087.7430433161. The cubic root of 2312431031 is about 1322.3799715015.

Adding to 2312431031 its reverse (1301342132), we get a palindrome (3613773163).

The spelling of 2312431031 in words is "two billion, three hundred twelve million, four hundred thirty-one thousand, thirty-one".