120020312331 has 20 divisors (see below), whose sum is σ = 183662524584. Its totient is φ = 78061989600.

The previous prime is 120020312323. The next prime is 120020312429. The reversal of 120020312331 is 133213020021.

120020312331 is a `hidden beast` number, since 1 + 2 + 0 + 0 + 20 + 312 + 331 = 666.

It is not a de Polignac number, because 120020312331 - 2³ = 120020312323 is a prime.

It is a super-2 number, since 2×120020312331² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (120020316331) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 18066585 + ... + 18073226.

Almost surely, 2^120020312331 is an apocalyptic number.

120020312331 is a deficient number, since it is larger than the sum of its proper divisors (63642212253).

120020312331 is an equidigital number, since it uses as much as digits as its factorization.

120020312331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36139864 (or 36139855 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 120020312331 its reverse (133213020021), we get a palindrome (253233332352).

The spelling of 120020312331 in words is "one hundred twenty billion, twenty million, three hundred twelve thousand, three hundred thirty-one".