31320410403 has 16 divisors (see below), whose sum is σ = 41988531200. Its totient is φ = 20766373056.

The previous prime is 31320410393. The next prime is 31320410431. The reversal of 31320410403 is 30401402313.

It is not a de Polignac number, because 31320410403 - 2²⁴ = 31303633187 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 31320410403.

It is not an unprimeable number, because it can be changed into a prime (31320410903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1552326 + ... + 1572372.

It is an arithmetic number, because the mean of its divisors is an integer number (2624283200).

Almost surely, 2^31320410403 is an apocalyptic number.

31320410403 is a deficient number, since it is larger than the sum of its proper divisors (10668120797).

31320410403 is a wasteful number, since it uses less digits than its factorization.

31320410403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22866.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 31320410403 its reverse (30401402313), we get a palindrome (61721812716).

The spelling of 31320410403 in words is "thirty-one billion, three hundred twenty million, four hundred ten thousand, four hundred three".