23081117312 has 128 divisors (see below), whose sum is σ = 52929676800. Its totient is φ = 9915264000.

The previous prime is 23081117309. The next prime is 23081117329. The reversal of 23081117312 is 21371118032.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×23081117312² (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 15 ways as a sum of consecutive naturals, for example, 15274637 + ... + 15276147.

It is an arithmetic number, because the mean of its divisors is an integer number (413513100).

Almost surely, 2^23081117312 is an apocalyptic number.

23081117312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23081117312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26464838400).

23081117312 is an abundant number, since it is smaller than the sum of its proper divisors (29848559488).

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

23081117312 is a wasteful number, since it uses less digits than its factorization.

23081117312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2126 (or 2114 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 29.

The spelling of 23081117312 in words is "twenty-three billion, eighty-one million, one hundred seventeen thousand, three hundred twelve".