12400322120031 has 16 divisors (see below), whose sum is σ = 17506533716064. Its totient is φ = 7780506891264.

The previous prime is 12400322119981. The next prime is 12400322120063. The reversal of 12400322120031 is 13002122300421.

It is not a de Polignac number, because 12400322120031 - 2⁶ = 12400322119967 is a prime.

It is a super-2 number, since 2×12400322120031² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12400322120531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3380565 + ... + 6019041.

It is an arithmetic number, because the mean of its divisors is an integer number (1094158357254).

Almost surely, 2^{12400322120031} is an apocalyptic number.

12400322120031 is a deficient number, since it is larger than the sum of its proper divisors (5106211596033).

12400322120031 is a wasteful number, since it uses less digits than its factorization.

12400322120031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2730650.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 12400322120031 its reverse (13002122300421), we get a palindrome (25402444420452).

The spelling of 12400322120031 in words is "twelve trillion, four hundred billion, three hundred twenty-two million, one hundred twenty thousand, thirty-one".