112510991 has 4 divisors (see below), whose sum is σ = 112794792. Its totient is φ = 112227192.

The previous prime is 112510973. The next prime is 112511017. The reversal of 112510991 is 199015211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 112510991 - 2⁶ = 112510927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112510921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141305 + ... + 142098.

It is an arithmetic number, because the mean of its divisors is an integer number (28198698).

Almost surely, 2^112510991 is an apocalyptic number.

112510991 is a deficient number, since it is larger than the sum of its proper divisors (283801).

112510991 is an equidigital number, since it uses as much as digits as its factorization.

112510991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283800.

The product of its (nonzero) digits is 810, while the sum is 29.

The square root of 112510991 is about 10607.1198258528. The cubic root of 112510991 is about 482.7604128188.

The spelling of 112510991 in words is "one hundred twelve million, five hundred ten thousand, nine hundred ninety-one".