23131031003 has 4 divisors (see below), whose sum is σ = 23148542568. Its totient is φ = 23113519440.

The previous prime is 23131030987. The next prime is 23131031017. The reversal of 23131031003 is 30013013132.

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

It is a cyclic number.

It is not a de Polignac number, because 23131031003 - 2⁴ = 23131030987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23131031503) 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, 8753801 + ... + 8756442.

It is an arithmetic number, because the mean of its divisors is an integer number (5787135642).

Almost surely, 2^23131031003 is an apocalyptic number.

23131031003 is a deficient number, since it is larger than the sum of its proper divisors (17511565).

23131031003 is a wasteful number, since it uses less digits than its factorization.

23131031003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17511564.

The product of its (nonzero) digits is 162, while the sum is 17.

Adding to 23131031003 its reverse (30013013132), we get a palindrome (53144044135).

The spelling of 23131031003 in words is "twenty-three billion, one hundred thirty-one million, thirty-one thousand, three".