23831781116 has 24 divisors (see below), whose sum is σ = 48996809904. Its totient is φ = 9999348480.

The previous prime is 23831781107. The next prime is 23831781137. The reversal of 23831781116 is 61118713832.

It is a happy number.

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, 20831405 + ... + 20832548.

It is an arithmetic number, because the mean of its divisors is an integer number (2041533746).

Almost surely, 2^23831781116 is an apocalyptic number.

23831781116 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

23831781116 is an abundant number, since it is smaller than the sum of its proper divisors (25165028788).

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

23831781116 is a wasteful number, since it uses less digits than its factorization.

23831781116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41663981 (or 41663979 counting only the distinct ones).

The product of its digits is 48384, while the sum is 41.

The spelling of 23831781116 in words is "twenty-three billion, eight hundred thirty-one million, seven hundred eighty-one thousand, one hundred sixteen".