30969689 has 2 divisors, whose sum is σ = 30969690. Its totient is φ = 30969688.

The previous prime is 30969623. The next prime is 30969721. The reversal of 30969689 is 98696903.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29888089 + 1081600 = 5467^2 + 1040^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30969689 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (30965689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15484844 + 15484845.

It is an arithmetic number, because the mean of its divisors is an integer number (15484845).

Almost surely, 2^30969689 is an apocalyptic number.

It is an amenable number.

30969689 is a deficient number, since it is larger than the sum of its proper divisors (1).

30969689 is an equidigital number, since it uses as much as digits as its factorization.

30969689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 629856, while the sum is 50.

The square root of 30969689 is about 5565.0416889723. The cubic root of 30969689 is about 314.0356464866.

The spelling of 30969689 in words is "thirty million, nine hundred sixty-nine thousand, six hundred eighty-nine".