113181587 has 4 divisors (see below), whose sum is σ = 113313600. Its totient is φ = 113049576.

The previous prime is 113181583. The next prime is 113181611. The reversal of 113181587 is 785181311.

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 113181587 - 2² = 113181583 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113181583) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64712 + ... + 66437.

It is an arithmetic number, because the mean of its divisors is an integer number (28328400).

Almost surely, 2^113181587 is an apocalyptic number.

113181587 is a deficient number, since it is larger than the sum of its proper divisors (132013).

113181587 is an equidigital number, since it uses as much as digits as its factorization.

113181587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132012.

The product of its digits is 6720, while the sum is 35.

The square root of 113181587 is about 10638.6835181802. The cubic root of 113181587 is about 483.7176411840.

The spelling of 113181587 in words is "one hundred thirteen million, one hundred eighty-one thousand, five hundred eighty-seven".