31312043403023 has 16 divisors (see below), whose sum is σ = 32556785071200. Its totient is φ = 30078494087040.

The previous prime is 31312043403019. The next prime is 31312043403041. The reversal of 31312043403023 is 32030434021313.

It is a cyclic number.

It is not a de Polignac number, because 31312043403023 - 2² = 31312043403019 is a prime.

It is a super-4 number, since 4×31312043403023⁴ (a number of 55 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31312043493023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7464140 + ... + 10878302.

It is an arithmetic number, because the mean of its divisors is an integer number (2034799066950).

Almost surely, 2^{31312043403023} is an apocalyptic number.

31312043403023 is a deficient number, since it is larger than the sum of its proper divisors (1244741668177).

31312043403023 is a wasteful number, since it uses less digits than its factorization.

31312043403023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3415802.

The product of its (nonzero) digits is 15552, while the sum is 29.

Adding to 31312043403023 its reverse (32030434021313), we get a palindrome (63342477424336).

The spelling of 31312043403023 in words is "thirty-one trillion, three hundred twelve billion, forty-three million, four hundred three thousand, twenty-three".