23031330012 has 36 divisors (see below), whose sum is σ = 58404113040. Its totient is φ = 7652578752.

The previous prime is 23031329969. The next prime is 23031330013. The reversal of 23031330012 is 21003313032.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23031330013) 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, 1010712 + ... + 1033247.

Almost surely, 2^23031330012 is an apocalyptic number.

It is an amenable number.

23031330012 is an abundant number, since it is smaller than the sum of its proper divisors (35372783028).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23031330012 is a wasteful number, since it uses less digits than its factorization.

23031330012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2044282 (or 2044277 counting only the distinct ones).

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

Adding to 23031330012 its reverse (21003313032), we get a palindrome (44034643044).

The spelling of 23031330012 in words is "twenty-three billion, thirty-one million, three hundred thirty thousand, twelve".