23131001132220 has 48 divisors (see below), whose sum is σ = 66144820267008. Its totient is φ = 6037027245120.

The previous prime is 23131001132203. The next prime is 23131001132297. The reversal of 23131001132220 is 2223110013132.

It is a congruent number.

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, 4101238516 + ... + 4101244155.

It is an arithmetic number, because the mean of its divisors is an integer number (1378017088896).

Almost surely, 2^{23131001132220} is an apocalyptic number.

23131001132220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23131001132220 is an abundant number, since it is smaller than the sum of its proper divisors (43013819134788).

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

23131001132220 is a wasteful number, since it uses less digits than its factorization.

23131001132220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8202482730 (or 8202482728 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 23131001132220 its reverse (2223110013132), we get a palindrome (25354111145352).

The spelling of 23131001132220 in words is "twenty-three trillion, one hundred thirty-one billion, one million, one hundred thirty-two thousand, two hundred twenty".