23311030988 has 24 divisors (see below), whose sum is σ = 46684184064. Its totient is φ = 9977130000.

The previous prime is 23311030903. The next prime is 23311031017. The reversal of 23311030988 is 88903011332.

It is a super-2 number, since 2×23311030988² (a number of 22 digits) contains 22 as substring.

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, 533258 + ... + 575313.

It is an arithmetic number, because the mean of its divisors is an integer number (1945174336).

Almost surely, 2^23311030988 is an apocalyptic number.

23311030988 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

23311030988 is an abundant number, since it is smaller than the sum of its proper divisors (23373153076).

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

23311030988 is a wasteful number, since it uses less digits than its factorization.

23311030988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1109333 (or 1109331 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 38.

The spelling of 23311030988 in words is "twenty-three billion, three hundred eleven million, thirty thousand, nine hundred eighty-eight".