30985711 has 2 divisors, whose sum is σ = 30985712. Its totient is φ = 30985710.

The previous prime is 30985673. The next prime is 30985723. The reversal of 30985711 is 11758903.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30985711 is a prime.

It is a super-2 number, since 2×30985711² = 1920228572351042, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30985111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15492855 + 15492856.

It is an arithmetic number, because the mean of its divisors is an integer number (15492856).

Almost surely, 2^30985711 is an apocalyptic number.

30985711 is a deficient number, since it is larger than the sum of its proper divisors (1).

30985711 is an equidigital number, since it uses as much as digits as its factorization.

30985711 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 34.

The square root of 30985711 is about 5566.4810248486. The cubic root of 30985711 is about 314.0897920277.

The spelling of 30985711 in words is "thirty million, nine hundred eighty-five thousand, seven hundred eleven".