12403552031 has 6 divisors (see below), whose sum is σ = 13431065400. Its totient is φ = 11449432488.

The previous prime is 12403552009. The next prime is 12403552067. The reversal of 12403552031 is 13025530421.

It is a happy number.

It is not a de Polignac number, because 12403552031 - 2²⁶ = 12336443167 is a prime.

It is a super-2 number, since 2×12403552031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12403552001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36696731 + ... + 36697068.

It is an arithmetic number, because the mean of its divisors is an integer number (2238510900).

Almost surely, 2^12403552031 is an apocalyptic number.

12403552031 is a deficient number, since it is larger than the sum of its proper divisors (1027513369).

12403552031 is an equidigital number, since it uses as much as digits as its factorization.

12403552031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73393825 (or 73393812 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The spelling of 12403552031 in words is "twelve billion, four hundred three million, five hundred fifty-two thousand, thirty-one".