12031200031 has 4 divisors (see below), whose sum is σ = 12033769464. Its totient is φ = 12028630600.

The previous prime is 12031199993. The next prime is 12031200059. The reversal of 12031200031 is 13000213021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13000213021 = 17 ⋅764718413.

It is a cyclic number.

It is not a de Polignac number, because 12031200031 - 2²⁵ = 11997645599 is a prime.

It is a super-2 number, since 2×12031200031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12031199984 and 12031200020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12031200131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1277680 + ... + 1287061.

It is an arithmetic number, because the mean of its divisors is an integer number (3008442366).

Almost surely, 2^12031200031 is an apocalyptic number.

12031200031 is a deficient number, since it is larger than the sum of its proper divisors (2569433).

12031200031 is an equidigital number, since it uses as much as digits as its factorization.

12031200031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2569432.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 12031200031 its reverse (13000213021), we get a palindrome (25031413052).

The spelling of 12031200031 in words is "twelve billion, thirty-one million, two hundred thousand, thirty-one".