30513691 has 8 divisors (see below), whose sum is σ = 34794144. Its totient is φ = 26509440.

The previous prime is 30513667. The next prime is 30513719. The reversal of 30513691 is 19631503.

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 30513691 - 2⁹ = 30513179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30513611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68815 + ... + 69256.

It is an arithmetic number, because the mean of its divisors is an integer number (4349268).

Almost surely, 2^30513691 is an apocalyptic number.

30513691 is a deficient number, since it is larger than the sum of its proper divisors (4280453).

30513691 is a wasteful number, since it uses less digits than its factorization.

30513691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138101.

The product of its (nonzero) digits is 2430, while the sum is 28.

The square root of 30513691 is about 5523.9198944228. The cubic root of 30513691 is about 312.4867313833.

The spelling of 30513691 in words is "thirty million, five hundred thirteen thousand, six hundred ninety-one".