23111255320 has 16 divisors (see below), whose sum is σ = 52000324560. Its totient is φ = 9244502112.

The previous prime is 23111255317. The next prime is 23111255333. The reversal of 23111255320 is 2355211132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 288890652 + ... + 288890731.

It is an arithmetic number, because the mean of its divisors is an integer number (3250020285).

Almost surely, 2^23111255320 is an apocalyptic number.

23111255320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23111255320 is an abundant number, since it is smaller than the sum of its proper divisors (28889069240).

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

23111255320 is a wasteful number, since it uses less digits than its factorization.

23111255320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577781394 (or 577781390 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 23111255320 its reverse (2355211132), we get a palindrome (25466466452).

The spelling of 23111255320 in words is "twenty-three billion, one hundred eleven million, two hundred fifty-five thousand, three hundred twenty".