313403987 has 8 divisors (see below), whose sum is σ = 338045904. Its totient is φ = 288838368.

The previous prime is 313403969. The next prime is 313403989. The reversal of 313403987 is 789304313.

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

It is not a de Polignac number, because 313403987 - 2⁸ = 313403731 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 313403987.

It is not an unprimeable number, because it can be changed into a prime (313403989) 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, 10388 + ... + 27105.

It is an arithmetic number, because the mean of its divisors is an integer number (42255738).

Almost surely, 2^313403987 is an apocalyptic number.

313403987 is a deficient number, since it is larger than the sum of its proper divisors (24641917).

313403987 is a wasteful number, since it uses less digits than its factorization.

313403987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38149.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 313403987 is about 17703.2196789172. The cubic root of 313403987 is about 679.2581204024.

The spelling of 313403987 in words is "three hundred thirteen million, four hundred three thousand, nine hundred eighty-seven".