31154445113 has 6 divisors (see below), whose sum is σ = 34244142282. Its totient is φ = 28322222720.

The previous prime is 31154445109. The next prime is 31154445121.

31154445113 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 16799529769 + 14354915344 = 129613^2 + 119812^2 .

It is not a de Polignac number, because 31154445113 - 2² = 31154445109 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31154445113.

It is not an unprimeable number, because it can be changed into a prime (31154445143) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 128737256 + ... + 128737497.

It is an arithmetic number, because the mean of its divisors is an integer number (5707357047).

Almost surely, 2^31154445113 is an apocalyptic number.

It is an amenable number.

31154445113 is a deficient number, since it is larger than the sum of its proper divisors (3089697169).

31154445113 is a wasteful number, since it uses less digits than its factorization.

31154445113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257474775 (or 257474764 counting only the distinct ones).

The product of its digits is 14400, while the sum is 32.

The spelling of 31154445113 in words is "thirty-one billion, one hundred fifty-four million, four hundred forty-five thousand, one hundred thirteen".