2031312431 has 2 divisors, whose sum is σ = 2031312432. Its totient is φ = 2031312430.

The previous prime is 2031312427. The next prime is 2031312443. The reversal of 2031312431 is 1342131302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2031312431 - 2² = 2031312427 is a prime.

It is a super-2 number, since 2×2031312431² = 8252460384670259522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2031312421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1015656215 + 1015656216.

It is an arithmetic number, because the mean of its divisors is an integer number (1015656216).

Almost surely, 2^2031312431 is an apocalyptic number.

2031312431 is a deficient number, since it is larger than the sum of its proper divisors (1).

2031312431 is an equidigital number, since it uses as much as digits as its factorization.

2031312431 is an evil number, because the sum of its binary digits is even.

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

The square root of 2031312431 is about 45070.0835477371. The cubic root of 2031312431 is about 1266.4622295253.

Adding to 2031312431 its reverse (1342131302), we get a palindrome (3373443733).

The spelling of 2031312431 in words is "two billion, thirty-one million, three hundred twelve thousand, four hundred thirty-one".