231211013030113 has 2 divisors, whose sum is σ = 231211013030114. Its totient is φ = 231211013030112.

The previous prime is 231211013030089. The next prime is 231211013030119. The reversal of 231211013030113 is 311030310112132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 177723906303969 + 53487106726144 = 13331313^2 + 7313488^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231211013030113 is a prime.

It is a super-2 number, since 2×231211013030113² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (231211013030119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115605506515056 + 115605506515057.

It is an arithmetic number, because the mean of its divisors is an integer number (115605506515057).

Almost surely, 2^{231211013030113} is an apocalyptic number.

It is an amenable number.

231211013030113 is a deficient number, since it is larger than the sum of its proper divisors (1).

231211013030113 is an equidigital number, since it uses as much as digits as its factorization.

231211013030113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 231211013030113 its reverse (311030310112132), we get a palindrome (542241323142245).

The spelling of 231211013030113 in words is "two hundred thirty-one trillion, two hundred eleven billion, thirteen million, thirty thousand, one hundred thirteen".