30987313 has 8 divisors (see below), whose sum is σ = 35529728. Its totient is φ = 26473824.

The previous prime is 30987301. The next prime is 30987337. The reversal of 30987313 is 31378903.

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

It is a cyclic number.

It is not a de Polignac number, because 30987313 - 2¹³ = 30979121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30987353) 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, 4881 + ... + 9262.

It is an arithmetic number, because the mean of its divisors is an integer number (4441216).

Almost surely, 2^30987313 is an apocalyptic number.

It is an amenable number.

30987313 is a deficient number, since it is larger than the sum of its proper divisors (4542415).

30987313 is a wasteful number, since it uses less digits than its factorization.

30987313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14463.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 30987313 is about 5566.6249200031. The cubic root of 30987313 is about 314.0952048794.

The spelling of 30987313 in words is "thirty million, nine hundred eighty-seven thousand, three hundred thirteen".