12031310031 has 16 divisors (see below), whose sum is σ = 17568539520. Its totient is φ = 7278392160.

The previous prime is 12031310021. The next prime is 12031310033. The reversal of 12031310031 is 13001313021.

It is not a de Polignac number, because 12031310031 - 2⁵ = 12031309999 is a prime.

It is a super-2 number, since 2×12031310031² (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 (12031310033) 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, 2612065 + ... + 2616666.

It is an arithmetic number, because the mean of its divisors is an integer number (1098033720).

Almost surely, 2^12031310031 is an apocalyptic number.

12031310031 is a deficient number, since it is larger than the sum of its proper divisors (5537229489).

12031310031 is a wasteful number, since it uses less digits than its factorization.

12031310031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5228806.

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

Adding to 12031310031 its reverse (13001313021), we get a palindrome (25032623052).

The spelling of 12031310031 in words is "twelve billion, thirty-one million, three hundred ten thousand, thirty-one".