31406108503 has 16 divisors (see below), whose sum is σ = 39159728640. Its totient is φ = 24469754400.

The previous prime is 31406108413. The next prime is 31406108507. The reversal of 31406108503 is 30580160413.

It is not a de Polignac number, because 31406108503 - 2⁹ = 31406107991 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 (31406108507) 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, 1131198 + ... + 1158628.

It is an arithmetic number, because the mean of its divisors is an integer number (2447483040).

Almost surely, 2^31406108503 is an apocalyptic number.

31406108503 is a deficient number, since it is larger than the sum of its proper divisors (7753620137).

31406108503 is a wasteful number, since it uses less digits than its factorization.

31406108503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42318.

The product of its (nonzero) digits is 8640, while the sum is 31.

Adding to 31406108503 its reverse (30580160413), we get a palindrome (61986268916).

The spelling of 31406108503 in words is "thirty-one billion, four hundred six million, one hundred eight thousand, five hundred three".