113572309 has 2 divisors, whose sum is σ = 113572310. Its totient is φ = 113572308.

The previous prime is 113572307. The next prime is 113572357. The reversal of 113572309 is 903275311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101566084 + 12006225 = 10078^2 + 3465^2 .

It is an emirp because it is prime and its reverse (903275311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 113572309 - 2¹ = 113572307 is a prime.

Together with 113572307, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113572307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56786154 + 56786155.

It is an arithmetic number, because the mean of its divisors is an integer number (56786155).

Almost surely, 2^113572309 is an apocalyptic number.

It is an amenable number.

113572309 is a deficient number, since it is larger than the sum of its proper divisors (1).

113572309 is an equidigital number, since it uses as much as digits as its factorization.

113572309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5670, while the sum is 31.

The square root of 113572309 is about 10657.0309655176. The cubic root of 113572309 is about 484.2736269520.

The spelling of 113572309 in words is "one hundred thirteen million, five hundred seventy-two thousand, three hundred nine".