113107561 has 16 divisors (see below), whose sum is σ = 136700928. Its totient is φ = 91526400.

The previous prime is 113107559. The next prime is 113107609. The reversal of 113107561 is 165701311.

It is not a de Polignac number, because 113107561 - 2¹ = 113107559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (113107531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2541 + ... + 15253.

It is an arithmetic number, because the mean of its divisors is an integer number (8543808).

Almost surely, 2^113107561 is an apocalyptic number.

It is an amenable number.

113107561 is a deficient number, since it is larger than the sum of its proper divisors (23593367).

113107561 is a wasteful number, since it uses less digits than its factorization.

113107561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12792.

The product of its (nonzero) digits is 630, while the sum is 25.

The square root of 113107561 is about 10635.2038532414. The cubic root of 113107561 is about 483.6121602705.

Adding to 113107561 its reverse (165701311), we get a palindrome (278808872).

The spelling of 113107561 in words is "one hundred thirteen million, one hundred seven thousand, five hundred sixty-one".