113090291521 has 9 divisors (see below), whose sum is σ = 113483428929. Its totient is φ = 112698514836.

The previous prime is 113090291471. The next prime is 113090291527. The reversal of 113090291521 is 125192090311.

It is a happy number.

The square root of 113090291521 is 336289.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 113090291521 - 2²¹ = 113088194369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113090291527) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 175878826 + ... + 175879468.

It is an arithmetic number, because the mean of its divisors is an integer number (12609269881).

Almost surely, 2^113090291521 is an apocalyptic number.

113090291521 is the 336289-th square number.

113090291521 is the 168145-th centered octagonal number.

It is an amenable number.

113090291521 is a deficient number, since it is larger than the sum of its proper divisors (393137408).

113090291521 is an frugal number, since it uses more digits than its factorization.

113090291521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2332 (or 1166 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 34.

The spelling of 113090291521 in words is "one hundred thirteen billion, ninety million, two hundred ninety-one thousand, five hundred twenty-one".