113331987 has 32 divisors (see below), whose sum is σ = 171617600. Its totient is φ = 73903104.

The previous prime is 113331983. The next prime is 113331997. The reversal of 113331987 is 789133311.

It is not a de Polignac number, because 113331987 - 2² = 113331983 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113331983) 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 31 ways as a sum of consecutive naturals, for example, 285273 + ... + 285669.

It is an arithmetic number, because the mean of its divisors is an integer number (5363050).

Almost surely, 2^113331987 is an apocalyptic number.

113331987 is a deficient number, since it is larger than the sum of its proper divisors (58285613).

113331987 is a wasteful number, since it uses less digits than its factorization.

113331987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612 (or 606 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 113331987 is about 10645.7497152620. The cubic root of 113331987 is about 483.9318071513.

The spelling of 113331987 in words is "one hundred thirteen million, three hundred thirty-one thousand, nine hundred eighty-seven".