30687313 has 8 divisors (see below), whose sum is σ = 32428800. Its totient is φ = 28979808.

The previous prime is 30687301. The next prime is 30687317. The reversal of 30687313 is 31378603.

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-30687313 is a prime.

It is a super-2 number, since 2×30687313² = 1883422358319938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30687317) 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, 6628 + ... + 10261.

It is an arithmetic number, because the mean of its divisors is an integer number (4053600).

Almost surely, 2^30687313 is an apocalyptic number.

It is an amenable number.

30687313 is a deficient number, since it is larger than the sum of its proper divisors (1741487).

30687313 is a wasteful number, since it uses less digits than its factorization.

30687313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16991.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 30687313 is about 5539.6130731306. The cubic root of 30687313 is about 313.0782909014.

The spelling of 30687313 in words is "thirty million, six hundred eighty-seven thousand, three hundred thirteen".