31331120401 has 32 divisors (see below), whose sum is σ = 38054522880. Its totient is φ = 25236804096.

The previous prime is 31331120371. The next prime is 31331120417. The reversal of 31331120401 is 10402113313.

It is not a de Polignac number, because 31331120401 - 2²⁵ = 31297565969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31331120801) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 815905 + ... + 853441.

It is an arithmetic number, because the mean of its divisors is an integer number (1189203840).

Almost surely, 2^31331120401 is an apocalyptic number.

It is an amenable number.

31331120401 is a deficient number, since it is larger than the sum of its proper divisors (6723402479).

31331120401 is a wasteful number, since it uses less digits than its factorization.

31331120401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37693.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 31331120401 its reverse (10402113313), we get a palindrome (41733233714).

The spelling of 31331120401 in words is "thirty-one billion, three hundred thirty-one million, one hundred twenty thousand, four hundred one".