23231311231020 has 96 divisors (see below), whose sum is σ = 65369318015232. Its totient is φ = 6164458330368.

The previous prime is 23231311231019. The next prime is 23231311231027. The reversal of 23231311231020 is 2013211313232.

It is not an unprimeable number, because it can be changed into a prime (23231311231027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8742739 + ... + 11085941.

It is an arithmetic number, because the mean of its divisors is an integer number (680930395992).

Almost surely, 2^{23231311231020} is an apocalyptic number.

23231311231020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23231311231020 is an abundant number, since it is smaller than the sum of its proper divisors (42138006784212).

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

23231311231020 is a wasteful number, since it uses less digits than its factorization.

23231311231020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2344031 (or 2344029 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 23231311231020 its reverse (2013211313232), we get a palindrome (25244522544252).

The spelling of 23231311231020 in words is "twenty-three trillion, two hundred thirty-one billion, three hundred eleven million, two hundred thirty-one thousand, twenty".