113210697581 has 2 divisors, whose sum is σ = 113210697582. Its totient is φ = 113210697580.

The previous prime is 113210697559. The next prime is 113210697601. The reversal of 113210697581 is 185796012311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110849709481 + 2360988100 = 332941^2 + 48590^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113210697581 is a prime.

It is a super-2 number, since 2×113210697581² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113210694581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56605348790 + 56605348791.

It is an arithmetic number, because the mean of its divisors is an integer number (56605348791).

Almost surely, 2^113210697581 is an apocalyptic number.

It is an amenable number.

113210697581 is a deficient number, since it is larger than the sum of its proper divisors (1).

113210697581 is an equidigital number, since it uses as much as digits as its factorization.

113210697581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 44.

The spelling of 113210697581 in words is "one hundred thirteen billion, two hundred ten million, six hundred ninety-seven thousand, five hundred eighty-one".