113509897 has 2 divisors, whose sum is σ = 113509898. Its totient is φ = 113509896.

The previous prime is 113509883. The next prime is 113509919. The reversal of 113509897 is 798905311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112126921 + 1382976 = 10589^2 + 1176^2 .

It is a cyclic number.

It is not a de Polignac number, because 113509897 - 2⁷ = 113509769 is a prime.

It is not a weakly prime, because it can be changed into another prime (113509597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56754948 + 56754949.

It is an arithmetic number, because the mean of its divisors is an integer number (56754949).

Almost surely, 2^113509897 is an apocalyptic number.

It is an amenable number.

113509897 is a deficient number, since it is larger than the sum of its proper divisors (1).

113509897 is an equidigital number, since it uses as much as digits as its factorization.

113509897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 68040, while the sum is 43.

The square root of 113509897 is about 10654.1023554310. The cubic root of 113509897 is about 484.1849022032.

The spelling of 113509897 in words is "one hundred thirteen million, five hundred nine thousand, eight hundred ninety-seven".