30680999 has 2 divisors, whose sum is σ = 30681000. Its totient is φ = 30680998.

The previous prime is 30680983. The next prime is 30681047. The reversal of 30680999 is 99908603.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30680999 - 2⁴ = 30680983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30680959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15340499 + 15340500.

It is an arithmetic number, because the mean of its divisors is an integer number (15340500).

Almost surely, 2^30680999 is an apocalyptic number.

30680999 is a deficient number, since it is larger than the sum of its proper divisors (1).

30680999 is an equidigital number, since it uses as much as digits as its factorization.

30680999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 104976, while the sum is 44.

The square root of 30680999 is about 5539.0431484147. The cubic root of 30680999 is about 313.0568171855.

The spelling of 30680999 in words is "thirty million, six hundred eighty thousand, nine hundred ninety-nine".