23381457318 has 12 divisors (see below), whose sum is σ = 50659824228. Its totient is φ = 7793819100.

The previous prime is 23381457311. The next prime is 23381457353. The reversal of 23381457318 is 81375418332.

23381457318 is a `hidden beast` number, since 23 + 38 + 14 + 573 + 18 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23381457311) 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, 649484908 + ... + 649484943.

It is an arithmetic number, because the mean of its divisors is an integer number (4221652019).

Almost surely, 2^23381457318 is an apocalyptic number.

23381457318 is an abundant number, since it is smaller than the sum of its proper divisors (27278366910).

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

23381457318 is a wasteful number, since it uses less digits than its factorization.

23381457318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1298969859 (or 1298969856 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The spelling of 23381457318 in words is "twenty-three billion, three hundred eighty-one million, four hundred fifty-seven thousand, three hundred eighteen".