23131030013 has 12 divisors (see below), whose sum is σ = 28977335100. Its totient is φ = 18301473792.

The previous prime is 23131029997. The next prime is 23131030051. The reversal of 23131030013 is 31003013132.

It can be written as a sum of positive squares in 2 ways, for example, as 13265971684 + 9865058329 = 115178^2 + 99323^2 .

It is not a de Polignac number, because 23131030013 - 2⁴ = 23131029997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23131029973 and 23131030000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23131030513) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18155588 + ... + 18156861.

It is an arithmetic number, because the mean of its divisors is an integer number (2414777925).

Almost surely, 2^23131030013 is an apocalyptic number.

It is an amenable number.

23131030013 is a deficient number, since it is larger than the sum of its proper divisors (5846305087).

23131030013 is a wasteful number, since it uses less digits than its factorization.

23131030013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36312476 (or 36312469 counting only the distinct ones).

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

Adding to 23131030013 its reverse (31003013132), we get a palindrome (54134043145).

The spelling of 23131030013 in words is "twenty-three billion, one hundred thirty-one million, thirty thousand, thirteen".