113100991 has 2 divisors, whose sum is σ = 113100992. Its totient is φ = 113100990.

The previous prime is 113100979. The next prime is 113101007. The reversal of 113100991 is 199001311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 113100991 - 2⁹ = 113100479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113100931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56550495 + 56550496.

It is an arithmetic number, because the mean of its divisors is an integer number (56550496).

Almost surely, 2^113100991 is an apocalyptic number.

113100991 is a deficient number, since it is larger than the sum of its proper divisors (1).

113100991 is an equidigital number, since it uses as much as digits as its factorization.

113100991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 243, while the sum is 25.

The square root of 113100991 is about 10634.8949689219. The cubic root of 113100991 is about 483.6027963418.

The spelling of 113100991 in words is "one hundred thirteen million, one hundred thousand, nine hundred ninety-one".