2312213015231 has 10 divisors (see below), whose sum is σ = 2697421350432. Its totient is φ = 1981896868140.

The previous prime is 2312213015227. The next prime is 2312213015237. The reversal of 2312213015231 is 1325103122132.

It is not a de Polignac number, because 2312213015231 - 2² = 2312213015227 is a prime.

It is a super-2 number, since 2×2312213015231² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2312213015231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2312213015237) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 481508015 + ... + 481512816.

Almost surely, 2^{2312213015231} is an apocalyptic number.

2312213015231 is a deficient number, since it is larger than the sum of its proper divisors (385208335201).

2312213015231 is an frugal number, since it uses more digits than its factorization.

2312213015231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 963020859 (or 963020838 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

Adding to 2312213015231 its reverse (1325103122132), we get a palindrome (3637316137363).

The spelling of 2312213015231 in words is "two trillion, three hundred twelve billion, two hundred thirteen million, fifteen thousand, two hundred thirty-one".