23231122020 has 72 divisors (see below), whose sum is σ = 70659947904. Its totient is φ = 6178068288.

The previous prime is 23231122007. The next prime is 23231122043. The reversal of 23231122020 is 2022113232.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 23231121984 and 23231122002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 109774 + ... + 241893.

Almost surely, 2^23231122020 is an apocalyptic number.

23231122020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23231122020 is an abundant number, since it is smaller than the sum of its proper divisors (47428825884).

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

23231122020 is a wasteful number, since it uses less digits than its factorization.

23231122020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352049 (or 352044 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 23231122020 its reverse (2022113232), we get a palindrome (25253235252).

The spelling of 23231122020 in words is "twenty-three billion, two hundred thirty-one million, one hundred twenty-two thousand, twenty".