30474391 has 2 divisors, whose sum is σ = 30474392. Its totient is φ = 30474390.

The previous prime is 30474383. The next prime is 30474397. The reversal of 30474391 is 19347403.

It is a strong prime.

It is an emirp because it is prime and its reverse (19347403) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30474391 - 2³ = 30474383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30474397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15237195 + 15237196.

It is an arithmetic number, because the mean of its divisors is an integer number (15237196).

Almost surely, 2^30474391 is an apocalyptic number.

30474391 is a deficient number, since it is larger than the sum of its proper divisors (1).

30474391 is an equidigital number, since it uses as much as digits as its factorization.

30474391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 30474391 is about 5520.3614917866. The cubic root of 30474391 is about 312.3525183549.

The spelling of 30474391 in words is "thirty million, four hundred seventy-four thousand, three hundred ninety-one".