113536991 has 2 divisors, whose sum is σ = 113536992. Its totient is φ = 113536990.

The previous prime is 113536987. The next prime is 113537057. The reversal of 113536991 is 199635311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 113536991 - 2² = 113536987 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113536691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56768495 + 56768496.

It is an arithmetic number, because the mean of its divisors is an integer number (56768496).

Almost surely, 2^113536991 is an apocalyptic number.

113536991 is a deficient number, since it is larger than the sum of its proper divisors (1).

113536991 is an equidigital number, since it uses as much as digits as its factorization.

113536991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21870, while the sum is 38.

The square root of 113536991 is about 10655.3738085531. The cubic root of 113536991 is about 484.2234229620.

The spelling of 113536991 in words is "one hundred thirteen million, five hundred thirty-six thousand, nine hundred ninety-one".