30674981 has 2 divisors, whose sum is σ = 30674982. Its totient is φ = 30674980.

The previous prime is 30674971. The next prime is 30674983. The reversal of 30674981 is 18947603.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24750625 + 5924356 = 4975^2 + 2434^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30674981 is a prime.

It is a super-2 number, since 2×30674981² = 1881908918700722, which contains 22 as substring.

Together with 30674983, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30674983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15337490 + 15337491.

It is an arithmetic number, because the mean of its divisors is an integer number (15337491).

Almost surely, 2^30674981 is an apocalyptic number.

It is an amenable number.

30674981 is a deficient number, since it is larger than the sum of its proper divisors (1).

30674981 is an equidigital number, since it uses as much as digits as its factorization.

30674981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 30674981 is about 5538.4998871536. The cubic root of 30674981 is about 313.0363474140.

The spelling of 30674981 in words is "thirty million, six hundred seventy-four thousand, nine hundred eighty-one".