23317993181 has 24 divisors (see below), whose sum is σ = 28752872640. Its totient is φ = 18472907520.

The previous prime is 23317993177. The next prime is 23317993217. The reversal of 23317993181 is 18139971332.

It is not a de Polignac number, because 23317993181 - 2² = 23317993177 is a prime.

It is a super-2 number, since 2×23317993181² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23317993381) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 171425 + ... + 275721.

It is an arithmetic number, because the mean of its divisors is an integer number (1198036360).

Almost surely, 2^23317993181 is an apocalyptic number.

It is an amenable number.

23317993181 is a deficient number, since it is larger than the sum of its proper divisors (5434879459).

23317993181 is a wasteful number, since it uses less digits than its factorization.

23317993181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104405 (or 104364 counting only the distinct ones).

The product of its digits is 244944, while the sum is 47.

The spelling of 23317993181 in words is "twenty-three billion, three hundred seventeen million, nine hundred ninety-three thousand, one hundred eighty-one".