23031321310120 has 32 divisors (see below), whose sum is σ = 51825052960200. Its totient is φ = 9211714299648.

The previous prime is 23031321310073. The next prime is 23031321310213. The reversal of 23031321310120 is 2101312313032.

It can be written as a sum of positive squares in 4 ways, for example, as 18703531758564 + 4327789551556 = 4324758^2 + 2080334^2 .

It is a super-2 number, since 2×23031321310120² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23031321310091 and 23031321310100.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24986175 + ... + 25891534.

Almost surely, 2^{23031321310120} is an apocalyptic number.

23031321310120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23031321310120 is an abundant number, since it is smaller than the sum of its proper divisors (28793731650080).

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

23031321310120 is a wasteful number, since it uses less digits than its factorization.

23031321310120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50889037 (or 50889033 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 23031321310120 its reverse (2101312313032), we get a palindrome (25132633623152).

The spelling of 23031321310120 in words is "twenty-three trillion, thirty-one billion, three hundred twenty-one million, three hundred ten thousand, one hundred twenty".