113221032131 has 2 divisors, whose sum is σ = 113221032132. Its totient is φ = 113221032130.

The previous prime is 113221032103. The next prime is 113221032163. The reversal of 113221032131 is 131230122311.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 113221032131 - 2²² = 113216837827 is a prime.

It is a super-2 number, since 2×113221032131² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (113221032031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56610516065 + 56610516066.

It is an arithmetic number, because the mean of its divisors is an integer number (56610516066).

Almost surely, 2^113221032131 is an apocalyptic number.

113221032131 is a deficient number, since it is larger than the sum of its proper divisors (1).

113221032131 is an equidigital number, since it uses as much as digits as its factorization.

113221032131 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 113221032131 its reverse (131230122311), we get a palindrome (244451154442).

The spelling of 113221032131 in words is "one hundred thirteen billion, two hundred twenty-one million, thirty-two thousand, one hundred thirty-one".