31311000320103 has 24 divisors (see below), whose sum is σ = 51778522480256. Its totient is φ = 17860665661200.

The previous prime is 31311000320071. The next prime is 31311000320167. The reversal of 31311000320103 is 30102300011313.

It is a happy number.

31311000320103 is a `hidden beast` number, since 31 + 311 + 0 + 0 + 0 + 320 + 1 + 0 + 3 = 666.

It is not a de Polignac number, because 31311000320103 - 2⁵ = 31311000320071 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 (31311000320503) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 435165433 + ... + 435237378.

Almost surely, 2^{31311000320103} is an apocalyptic number.

31311000320103 is a deficient number, since it is larger than the sum of its proper divisors (20467522160153).

31311000320103 is a wasteful number, since it uses less digits than its factorization.

31311000320103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 870403395 (or 870403392 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 31311000320103 its reverse (30102300011313), we get a palindrome (61413300331416).

The spelling of 31311000320103 in words is "thirty-one trillion, three hundred eleven billion, three hundred twenty thousand, one hundred three".