30680531 has 8 divisors (see below), whose sum is σ = 35658240. Its totient is φ = 25851528.

The previous prime is 30680527. The next prime is 30680537. The reversal of 30680531 is 13508603.

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 30680531 - 2² = 30680527 is a prime.

It is a super-2 number, since 2×30680531² = 1882589964883922, which contains 22 as substring.

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 30680531.

It is not an unprimeable number, because it can be changed into a prime (30680537) 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, 36731 + ... + 37556.

It is an arithmetic number, because the mean of its divisors is an integer number (4457280).

Almost surely, 2^30680531 is an apocalyptic number.

30680531 is a deficient number, since it is larger than the sum of its proper divisors (4977709).

30680531 is an equidigital number, since it uses as much as digits as its factorization.

30680531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74353.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 30680531 is about 5539.0009026899. Note that the first 3 decimals coincide. The cubic root of 30680531 is about 313.0552254149.

The spelling of 30680531 in words is "thirty million, six hundred eighty thousand, five hundred thirty-one".