113112991 has 2 divisors, whose sum is σ = 113112992. Its totient is φ = 113112990.

The previous prime is 113112983. The next prime is 113112997. The reversal of 113112991 is 199211311.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 113112991 - 2³ = 113112983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113112997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56556495 + 56556496.

It is an arithmetic number, because the mean of its divisors is an integer number (56556496).

Almost surely, 2^113112991 is an apocalyptic number.

113112991 is a deficient number, since it is larger than the sum of its proper divisors (1).

113112991 is an equidigital number, since it uses as much as digits as its factorization.

113112991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 486, while the sum is 28.

The square root of 113112991 is about 10635.4591344239. The cubic root of 113112991 is about 483.6198991343.

The spelling of 113112991 in words is "one hundred thirteen million, one hundred twelve thousand, nine hundred ninety-one".