113442991 has 2 divisors, whose sum is σ = 113442992. Its totient is φ = 113442990.

The previous prime is 113442961. The next prime is 113443021. The reversal of 113442991 is 199244311.

It is a balanced prime because it is at equal distance from previous prime (113442961) and next prime (113443021).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113442991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113442911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56721495 + 56721496.

It is an arithmetic number, because the mean of its divisors is an integer number (56721496).

Almost surely, 2^113442991 is an apocalyptic number.

113442991 is a deficient number, since it is larger than the sum of its proper divisors (1).

113442991 is an equidigital number, since it uses as much as digits as its factorization.

113442991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 34.

The square root of 113442991 is about 10650.9619753335. The cubic root of 113442991 is about 484.0897526675.

The spelling of 113442991 in words is "one hundred thirteen million, four hundred forty-two thousand, nine hundred ninety-one".