20123131121032 has 32 divisors (see below), whose sum is σ = 38218294709280. Its totient is φ = 9931794342400.

The previous prime is 20123131121021. The next prime is 20123131121221. The reversal of 20123131121032 is 23012113132102.

It is a super-2 number, since 2×20123131121032² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20123131120994 and 20123131121012.

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, 12256969 + ... + 13801432.

It is an arithmetic number, because the mean of its divisors is an integer number (1194321709665).

Almost surely, 2^{20123131121032} is an apocalyptic number.

It is an amenable number.

20123131121032 is a deficient number, since it is larger than the sum of its proper divisors (18095163588248).

20123131121032 is a wasteful number, since it uses less digits than its factorization.

20123131121032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26059653 (or 26059649 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 20123131121032 its reverse (23012113132102), we get a palindrome (43135244253134).

The spelling of 20123131121032 in words is "twenty trillion, one hundred twenty-three billion, one hundred thirty-one million, one hundred twenty-one thousand, thirty-two".