31331241431402 has 16 divisors (see below), whose sum is σ = 51776921037024. Its totient is φ = 14100468690000.

The previous prime is 31331241431363. The next prime is 31331241431407. The reversal of 31331241431402 is 20413414213313.

It is not an unprimeable number, because it can be changed into a prime (31331241431407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7050232124 + ... + 7050236567.

It is an arithmetic number, because the mean of its divisors is an integer number (3236057564814).

Almost surely, 2^{31331241431402} is an apocalyptic number.

31331241431402 is a deficient number, since it is larger than the sum of its proper divisors (20445679605622).

31331241431402 is a wasteful number, since it uses less digits than its factorization.

31331241431402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14100468805.

The product of its (nonzero) digits is 20736, while the sum is 32.

Adding to 31331241431402 its reverse (20413414213313), we get a palindrome (51744655644715).

It can be divided in two parts, 313312 and 41431402, that added together give a palindrome (41744714).

The spelling of 31331241431402 in words is "thirty-one trillion, three hundred thirty-one billion, two hundred forty-one million, four hundred thirty-one thousand, four hundred two".