31315412403231 has 16 divisors (see below), whose sum is σ = 48229084343808. Its totient is φ = 17862623830400.

The previous prime is 31315412403193. The next prime is 31315412403311. The reversal of 31315412403231 is 13230421451313.

It is a cyclic number.

It is not a de Polignac number, because 31315412403231 - 2²⁵ = 31315378848799 is a prime.

It is a super-2 number, since 2×31315412403231² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 31315412403192 and 31315412403201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31315412403931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27910349175 + ... + 27910350296.

It is an arithmetic number, because the mean of its divisors is an integer number (3014317771488).

Almost surely, 2^{31315412403231} is an apocalyptic number.

31315412403231 is a deficient number, since it is larger than the sum of its proper divisors (16913671940577).

31315412403231 is a wasteful number, since it uses less digits than its factorization.

31315412403231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55820699502.

The product of its (nonzero) digits is 25920, while the sum is 33.

Adding to 31315412403231 its reverse (13230421451313), we get a palindrome (44545833854544).

The spelling of 31315412403231 in words is "thirty-one trillion, three hundred fifteen billion, four hundred twelve million, four hundred three thousand, two hundred thirty-one".