2312311231131 has 16 divisors (see below), whose sum is σ = 3479339784960. Its totient is φ = 1353076581920.

The previous prime is 2312311231129. The next prime is 2312311231157. The reversal of 2312311231131 is 1311321132132.

It is a cyclic number.

It is not a de Polignac number, because 2312311231131 - 2¹ = 2312311231129 is a prime.

It is a super-2 number, since 2×2312311231131² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2312311231171) 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, 1208103135 + ... + 1208105048.

It is an arithmetic number, because the mean of its divisors is an integer number (217458736560).

Almost surely, 2^{2312311231131} is an apocalyptic number.

2312311231131 is a deficient number, since it is larger than the sum of its proper divisors (1167028553829).

2312311231131 is a wasteful number, since it uses less digits than its factorization.

2312311231131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2416208226.

The product of its digits is 648, while the sum is 24.

Adding to 2312311231131 its reverse (1311321132132), we get a palindrome (3623632363263).

The spelling of 2312311231131 in words is "two trillion, three hundred twelve billion, three hundred eleven million, two hundred thirty-one thousand, one hundred thirty-one".