23231231020 has 48 divisors (see below), whose sum is σ = 49139239968. Its totient is φ = 9225377280.

The previous prime is 23231230991. The next prime is 23231231021. The reversal of 23231231020 is 2013213232.

It is a super-2 number, since 2×23231231020² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23231231021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1549279 + ... + 1564201.

It is an arithmetic number, because the mean of its divisors is an integer number (1023734166).

Almost surely, 2^23231231020 is an apocalyptic number.

23231231020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23231231020 is an abundant number, since it is smaller than the sum of its proper divisors (25908008948).

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

23231231020 is a wasteful number, since it uses less digits than its factorization.

23231231020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15490 (or 15488 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 23231231020 its reverse (2013213232), we get a palindrome (25244444252).

The spelling of 23231231020 in words is "twenty-three billion, two hundred thirty-one million, two hundred thirty-one thousand, twenty".