30864997 has 2 divisors, whose sum is σ = 30864998. Its totient is φ = 30864996.

The previous prime is 30864991. The next prime is 30865001. The reversal of 30864997 is 79946803.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29931841 + 933156 = 5471^2 + 966^2 .

It is an emirp because it is prime and its reverse (79946803) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30864997 - 2³ = 30864989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30864991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15432498 + 15432499.

It is an arithmetic number, because the mean of its divisors is an integer number (15432499).

Almost surely, 2^30864997 is an apocalyptic number.

It is an amenable number.

30864997 is a deficient number, since it is larger than the sum of its proper divisors (1).

30864997 is an equidigital number, since it uses as much as digits as its factorization.

30864997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 30864997 is about 5555.6275073118. The cubic root of 30864997 is about 313.6813846556.

The spelling of 30864997 in words is "thirty million, eight hundred sixty-four thousand, nine hundred ninety-seven".