316139587 has 8 divisors (see below), whose sum is σ = 319855536. Its totient is φ = 312433152.

The previous prime is 316139573. The next prime is 316139591. The reversal of 316139587 is 785931613.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-316139587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (316139687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81228 + ... + 85030.

It is an arithmetic number, because the mean of its divisors is an integer number (39981942).

Almost surely, 2^316139587 is an apocalyptic number.

316139587 is a deficient number, since it is larger than the sum of its proper divisors (3715949).

316139587 is an equidigital number, since it uses as much as digits as its factorization.

316139587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4757.

The product of its digits is 136080, while the sum is 43.

The square root of 316139587 is about 17780.3145922675. The cubic root of 316139587 is about 681.2287378601.

The spelling of 316139587 in words is "three hundred sixteen million, one hundred thirty-nine thousand, five hundred eighty-seven".