12331010031 has 4 divisors (see below), whose sum is σ = 16441346712. Its totient is φ = 8220673352.

The previous prime is 12331009973. The next prime is 12331010039. The reversal of 12331010031 is 13001013321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12331010031 is a prime.

It is a super-2 number, since 2×12331010031² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12331010039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2055168336 + ... + 2055168341.

It is an arithmetic number, because the mean of its divisors is an integer number (4110336678).

Almost surely, 2^12331010031 is an apocalyptic number.

12331010031 is a deficient number, since it is larger than the sum of its proper divisors (4110336681).

12331010031 is an equidigital number, since it uses as much as digits as its factorization.

12331010031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4110336680.

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 12331010031 its reverse (13001013321), we get a palindrome (25332023352).

The spelling of 12331010031 in words is "twelve billion, three hundred thirty-one million, ten thousand, thirty-one".