31011102103 has 16 divisors (see below), whose sum is σ = 32328502272. Its totient is φ = 29723148000.

The previous prime is 31011102097. The next prime is 31011102137. The reversal of 31011102103 is 30120111013.

It is not a de Polignac number, because 31011102103 - 2⁵ = 31011102071 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 (31011102203) 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, 1116798 + ... + 1144228.

It is an arithmetic number, because the mean of its divisors is an integer number (2020531392).

Almost surely, 2^31011102103 is an apocalyptic number.

31011102103 is a deficient number, since it is larger than the sum of its proper divisors (1317400169).

31011102103 is a wasteful number, since it uses less digits than its factorization.

31011102103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27966.

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 31011102103 its reverse (30120111013), we get a palindrome (61131213116).

The spelling of 31011102103 in words is "thirty-one billion, eleven million, one hundred two thousand, one hundred three".