31331241431401 has 4 divisors (see below), whose sum is σ = 31421015762500. Its totient is φ = 31241467100304.

The previous prime is 31331241431363. The next prime is 31331241431407. The reversal of 31331241431401 is 10413414213313.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14057242991401 + 17273998440000 = 3749299^2 + 4156200^2 .

It is a cyclic number.

It is not a de Polignac number, because 31331241431401 - 2²⁷ = 31331107213673 is a prime.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 44887165026 + ... + 44887165723.

It is an arithmetic number, because the mean of its divisors is an integer number (7855253940625).

Almost surely, 2^{31331241431401} is an apocalyptic number.

It is an amenable number.

31331241431401 is a deficient number, since it is larger than the sum of its proper divisors (89774331099).

31331241431401 is an equidigital number, since it uses as much as digits as its factorization.

31331241431401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89774331098.

The product of its (nonzero) digits is 10368, while the sum is 31.

Adding to 31331241431401 its reverse (10413414213313), we get a palindrome (41744655644714).

The spelling of 31331241431401 in words is "thirty-one trillion, three hundred thirty-one billion, two hundred forty-one million, four hundred thirty-one thousand, four hundred one".