23131311103 has 4 divisors (see below), whose sum is σ = 24491976480. Its totient is φ = 21770645728.

The previous prime is 23131311097. The next prime is 23131311109. The reversal of 23131311103 is 30111313132.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (23131311097) and next prime (23131311109).

It is a cyclic number.

It is not a de Polignac number, because 23131311103 - 2³³ = 14541376511 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 (23131311109) 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, 680332663 + ... + 680332696.

It is an arithmetic number, because the mean of its divisors is an integer number (6122994120).

Almost surely, 2^23131311103 is an apocalyptic number.

23131311103 is a deficient number, since it is larger than the sum of its proper divisors (1360665377).

23131311103 is a wasteful number, since it uses less digits than its factorization.

23131311103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1360665376.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 23131311103 its reverse (30111313132), we get a palindrome (53242624235).

The spelling of 23131311103 in words is "twenty-three billion, one hundred thirty-one million, three hundred eleven thousand, one hundred three".