2311201203131 has 2 divisors, whose sum is σ = 2311201203132. Its totient is φ = 2311201203130.

The previous prime is 2311201203011. The next prime is 2311201203137. The reversal of 2311201203131 is 1313021021132.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2311201203131 - 2²⁶ = 2311134094267 is a prime.

It is a super-2 number, since 2×2311201203131² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2311201203137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1155600601565 + 1155600601566.

It is an arithmetic number, because the mean of its divisors is an integer number (1155600601566).

Almost surely, 2^{2311201203131} is an apocalyptic number.

2311201203131 is a deficient number, since it is larger than the sum of its proper divisors (1).

2311201203131 is an equidigital number, since it uses as much as digits as its factorization.

2311201203131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 2311201203131 its reverse (1313021021132), we get a palindrome (3624222224263).

The spelling of 2311201203131 in words is "two trillion, three hundred eleven billion, two hundred one million, two hundred three thousand, one hundred thirty-one".