31131033012023 has 6 divisors (see below), whose sum is σ = 36213650646696. Its totient is φ = 26683742581692.

The previous prime is 31131033012011. The next prime is 31131033012049. The reversal of 31131033012023 is 32021033013113.

It is not a de Polignac number, because 31131033012023 - 2²⁴ = 31131016234807 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31131033012023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31131033012823) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 317663602115 + ... + 317663602212.

It is an arithmetic number, because the mean of its divisors is an integer number (6035608441116).

Almost surely, 2^{31131033012023} is an apocalyptic number.

31131033012023 is a deficient number, since it is larger than the sum of its proper divisors (5082617634673).

31131033012023 is an equidigital number, since it uses as much as digits as its factorization.

31131033012023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635327204341 (or 635327204334 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 31131033012023 its reverse (32021033013113), we get a palindrome (63152066025136).

The spelling of 31131033012023 in words is "thirty-one trillion, one hundred thirty-one billion, thirty-three million, twelve thousand, twenty-three".