23101012311500 has 48 divisors (see below), whose sum is σ = 50786734305216. Its totient is φ = 9179210160000.

The previous prime is 23101012311469. The next prime is 23101012311527. The reversal of 23101012311500 is 511321010132.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 152911337 + ... + 153062336.

It is an arithmetic number, because the mean of its divisors is an integer number (1058056964692).

Almost surely, 2^{23101012311500} is an apocalyptic number.

23101012311500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23101012311500 is an abundant number, since it is smaller than the sum of its proper divisors (27685721993716).

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

23101012311500 is a wasteful number, since it uses less digits than its factorization.

23101012311500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305973843 (or 305973831 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 20.

Adding to 23101012311500 its reverse (511321010132), we get a palindrome (23612333321632).

The spelling of 23101012311500 in words is "twenty-three trillion, one hundred one billion, twelve million, three hundred eleven thousand, five hundred".