31313102412031 has 16 divisors (see below), whose sum is σ = 35865098375040. Its totient is φ = 27074633050080.

The previous prime is 31313102412013. The next prime is 31313102412047. The reversal of 31313102412031 is 13021420131313.

It is not a de Polignac number, because 31313102412031 - 2¹³ = 31313102403839 is a prime.

It is a super-2 number, since 2×31313102412031² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31313102411987 and 31313102412005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31313102412331) 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, 732517401 + ... + 732560146.

It is an arithmetic number, because the mean of its divisors is an integer number (2241568648440).

Almost surely, 2^{31313102412031} is an apocalyptic number.

31313102412031 is a deficient number, since it is larger than the sum of its proper divisors (4551995963009).

31313102412031 is a wasteful number, since it uses less digits than its factorization.

31313102412031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1465077654.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 31313102412031 its reverse (13021420131313), we get a palindrome (44334522543344).

The spelling of 31313102412031 in words is "thirty-one trillion, three hundred thirteen billion, one hundred two million, four hundred twelve thousand, thirty-one".