23311031020 has 48 divisors (see below), whose sum is σ = 49305757536. Its totient is φ = 9257472000.

The previous prime is 23311031017. The next prime is 23311031059. The reversal of 23311031020 is 2013011332.

It is a junction number, because it is equal to n+sod(n) for n = 23311030985 and 23311031003.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1770060 + ... + 1783180.

It is an arithmetic number, because the mean of its divisors is an integer number (1027203282).

Almost surely, 2^23311031020 is an apocalyptic number.

23311031020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23311031020 is an abundant number, since it is smaller than the sum of its proper divisors (25994726516).

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

23311031020 is a wasteful number, since it uses less digits than its factorization.

23311031020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13762 (or 13760 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 23311031020 its reverse (2013011332), we get a palindrome (25324042352).

The spelling of 23311031020 in words is "twenty-three billion, three hundred eleven million, thirty-one thousand, twenty".