30690983 has 2 divisors, whose sum is σ = 30690984. Its totient is φ = 30690982.

The previous prime is 30690973. The next prime is 30690997. The reversal of 30690983 is 38909603.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30690983 - 2⁸ = 30690727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30690923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15345491 + 15345492.

It is an arithmetic number, because the mean of its divisors is an integer number (15345492).

Almost surely, 2^30690983 is an apocalyptic number.

30690983 is a deficient number, since it is larger than the sum of its proper divisors (1).

30690983 is an equidigital number, since it uses as much as digits as its factorization.

30690983 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 30690983 is about 5539.9443137996. The cubic root of 30690983 is about 313.0907711026.

The spelling of 30690983 in words is "thirty million, six hundred ninety thousand, nine hundred eighty-three".