3131201212231 has 4 divisors (see below), whose sum is σ = 3144874580200. Its totient is φ = 3117527844264.

The previous prime is 3131201212211. The next prime is 3131201212273. The reversal of 3131201212231 is 1322121021313.

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

It is a cyclic number.

It is not a de Polignac number, because 3131201212231 - 2⁵ = 3131201212199 is a prime.

It is a super-2 number, since 2×3131201212231² (a number of 26 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 (3131201212211) 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, 6836683641 + ... + 6836684098.

It is an arithmetic number, because the mean of its divisors is an integer number (786218645050).

Almost surely, 2^{3131201212231} is an apocalyptic number.

3131201212231 is a deficient number, since it is larger than the sum of its proper divisors (13673367969).

3131201212231 is a wasteful number, since it uses less digits than its factorization.

3131201212231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13673367968.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 3131201212231 its reverse (1322121021313), we get a palindrome (4453322233544).

The spelling of 3131201212231 in words is "three trillion, one hundred thirty-one billion, two hundred one million, two hundred twelve thousand, two hundred thirty-one".