31485458413 has 4 divisors (see below), whose sum is σ = 33337544220. Its totient is φ = 29633372608.

The previous prime is 31485458399. The next prime is 31485458423.

31485458413 is nontrivially palindromic in base 10.

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 24933041604 + 6552416809 = 157902^2 + 80947^2 .

It is a cyclic number.

It is not a de Polignac number, because 31485458413 - 2²⁵ = 31451903981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31485458423) 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, 926042878 + ... + 926042911.

It is an arithmetic number, because the mean of its divisors is an integer number (8334386055).

Almost surely, 2^31485458413 is an apocalyptic number.

It is an amenable number.

31485458413 is a deficient number, since it is larger than the sum of its proper divisors (1852085807).

31485458413 is a wasteful number, since it uses less digits than its factorization.

31485458413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1852085806.

The product of its digits is 921600, while the sum is 46.

The spelling of 31485458413 in words is "thirty-one billion, four hundred eighty-five million, four hundred fifty-eight thousand, four hundred thirteen".