113200991 has 2 divisors, whose sum is σ = 113200992. Its totient is φ = 113200990.

The previous prime is 113200981. The next prime is 113201003. The reversal of 113200991 is 199002311.

It is a weak prime.

It is an emirp because it is prime and its reverse (199002311) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113200991 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 113200991.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113200921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56600495 + 56600496.

It is an arithmetic number, because the mean of its divisors is an integer number (56600496).

Almost surely, 2^113200991 is an apocalyptic number.

113200991 is a deficient number, since it is larger than the sum of its proper divisors (1).

113200991 is an equidigital number, since it uses as much as digits as its factorization.

113200991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486, while the sum is 26.

The square root of 113200991 is about 10639.5954340379. The cubic root of 113200991 is about 483.7452826672.

The spelling of 113200991 in words is "one hundred thirteen million, two hundred thousand, nine hundred ninety-one".