13111231302131 has 2 divisors, whose sum is σ = 13111231302132. Its totient is φ = 13111231302130.

The previous prime is 13111231302077. The next prime is 13111231302137. The reversal of 13111231302131 is 13120313211131.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13111231302131 is a prime.

It is a super-2 number, since 2×13111231302131² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13111231302097 and 13111231302106.

It is not a weakly prime, because it can be changed into another prime (13111231302137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6555615651065 + 6555615651066.

It is an arithmetic number, because the mean of its divisors is an integer number (6555615651066).

Almost surely, 2^{13111231302131} is an apocalyptic number.

13111231302131 is a deficient number, since it is larger than the sum of its proper divisors (1).

13111231302131 is an equidigital number, since it uses as much as digits as its factorization.

13111231302131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 23.

Adding to 13111231302131 its reverse (13120313211131), we get a palindrome (26231544513262).

The spelling of 13111231302131 in words is "thirteen trillion, one hundred eleven billion, two hundred thirty-one million, three hundred two thousand, one hundred thirty-one".