23131019903 has 2 divisors, whose sum is σ = 23131019904. Its totient is φ = 23131019902.

The previous prime is 23131019839. The next prime is 23131019911. The reversal of 23131019903 is 30991013132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23131019903 - 2⁶ = 23131019839 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23131019903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23131019953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11565509951 + 11565509952.

It is an arithmetic number, because the mean of its divisors is an integer number (11565509952).

Almost surely, 2^23131019903 is an apocalyptic number.

23131019903 is a deficient number, since it is larger than the sum of its proper divisors (1).

23131019903 is an equidigital number, since it uses as much as digits as its factorization.

23131019903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4374, while the sum is 32.

The spelling of 23131019903 in words is "twenty-three billion, one hundred thirty-one million, nineteen thousand, nine hundred three".