30965969 has 2 divisors, whose sum is σ = 30965970. Its totient is φ = 30965968.

The previous prime is 30965951. The next prime is 30965971. The reversal of 30965969 is 96956903.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24127744 + 6838225 = 4912^2 + 2615^2 .

It is a cyclic number.

It is not a de Polignac number, because 30965969 - 2⁸ = 30965713 is a prime.

It is a super-2 number, since 2×30965969² = 1917782472217922, which contains 22 as substring.

Together with 30965971, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (30965569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15482984 + 15482985.

It is an arithmetic number, because the mean of its divisors is an integer number (15482985).

Almost surely, 2^30965969 is an apocalyptic number.

It is an amenable number.

30965969 is a deficient number, since it is larger than the sum of its proper divisors (1).

30965969 is an equidigital number, since it uses as much as digits as its factorization.

30965969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 393660, while the sum is 47.

The square root of 30965969 is about 5564.7074496329. The cubic root of 30965969 is about 314.0230722630.

The spelling of 30965969 in words is "thirty million, nine hundred sixty-five thousand, nine hundred sixty-nine".