23031302031 has 6 divisors (see below), whose sum is σ = 33267436280. Its totient is φ = 15354201348.

The previous prime is 23031302027. The next prime is 23031302033. The reversal of 23031302031 is 13020313032.

It is not a de Polignac number, because 23031302031 - 2² = 23031302027 is a prime.

It is a super-2 number, since 2×23031302031² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23031301995 and 23031302013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23031302033) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1279516771 + ... + 1279516788.

Almost surely, 2^23031302031 is an apocalyptic number.

23031302031 is a deficient number, since it is larger than the sum of its proper divisors (10236134249).

23031302031 is a wasteful number, since it uses less digits than its factorization.

23031302031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2559033565 (or 2559033562 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 23031302031 its reverse (13020313032), we get a palindrome (36051615063).

The spelling of 23031302031 in words is "twenty-three billion, thirty-one million, three hundred two thousand, thirty-one".