113561969 has 2 divisors, whose sum is σ = 113561970. Its totient is φ = 113561968.

The previous prime is 113561933. The next prime is 113562019. The reversal of 113561969 is 969165311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86397025 + 27164944 = 9295^2 + 5212^2 .

It is a cyclic number.

It is not a de Polignac number, because 113561969 - 2¹⁶ = 113496433 is a prime.

It is a super-2 number, since 2×113561969² = 25792641606313922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (113561909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56780984 + 56780985.

It is an arithmetic number, because the mean of its divisors is an integer number (56780985).

Almost surely, 2^113561969 is an apocalyptic number.

It is an amenable number.

113561969 is a deficient number, since it is larger than the sum of its proper divisors (1).

113561969 is an equidigital number, since it uses as much as digits as its factorization.

113561969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43740, while the sum is 41.

The square root of 113561969 is about 10656.5458287383. The cubic root of 113561969 is about 484.2589298798.

The spelling of 113561969 in words is "one hundred thirteen million, five hundred sixty-one thousand, nine hundred sixty-nine".