23171582012 has 24 divisors (see below), whose sum is σ = 45195348240. Its totient is φ = 10330364160.

The previous prime is 23171582009. The next prime is 23171582039. The reversal of 23171582012 is 21028517132.

It is a self number, because there is not a number n which added to its sum of digits gives 23171582012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8966039 + ... + 8968622.

It is an arithmetic number, because the mean of its divisors is an integer number (1883139510).

Almost surely, 2^23171582012 is an apocalyptic number.

It is an amenable number.

23171582012 is a deficient number, since it is larger than the sum of its proper divisors (22023766228).

23171582012 is a wasteful number, since it uses less digits than its factorization.

23171582012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17934701 (or 17934699 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 32.

The spelling of 23171582012 in words is "twenty-three billion, one hundred seventy-one million, five hundred eighty-two thousand, twelve".