2311211312131 has 8 divisors (see below), whose sum is σ = 2331679828320. Its totient is φ = 2290794946368.

The previous prime is 2311211312063. The next prime is 2311211312159. The reversal of 2311211312131 is 1312131121132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2311211312131 is a prime.

It is a super-2 number, since 2×2311211312131² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2311212312131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12948576 + ... + 13125853.

It is an arithmetic number, because the mean of its divisors is an integer number (291459978540).

Almost surely, 2^{2311211312131} is an apocalyptic number.

2311211312131 is a deficient number, since it is larger than the sum of its proper divisors (20468516189).

2311211312131 is a wasteful number, since it uses less digits than its factorization.

2311211312131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26075213.

The product of its digits is 216, while the sum is 22.

Adding to 2311211312131 its reverse (1312131121132), we get a palindrome (3623342433263).

The spelling of 2311211312131 in words is "two trillion, three hundred eleven billion, two hundred eleven million, three hundred twelve thousand, one hundred thirty-one".