30472231 has 2 divisors, whose sum is σ = 30472232. Its totient is φ = 30472230.

The previous prime is 30472229. The next prime is 30472249. The reversal of 30472231 is 13227403.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30472231 - 2¹ = 30472229 is a prime.

It is a super-2 number, since 2×30472231² = 1857113724234722, which contains 22 as substring.

Together with 30472229, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30472271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15236115 + 15236116.

It is an arithmetic number, because the mean of its divisors is an integer number (15236116).

Almost surely, 2^30472231 is an apocalyptic number.

30472231 is a deficient number, since it is larger than the sum of its proper divisors (1).

30472231 is an equidigital number, since it uses as much as digits as its factorization.

30472231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 30472231 is about 5520.1658489578. The cubic root of 30472231 is about 312.3451384166.

Adding to 30472231 its reverse (13227403), we get a palindrome (43699634).

It can be divided in two parts, 30472 and 231, that added together give a palindrome (30703).

The spelling of 30472231 in words is "thirty million, four hundred seventy-two thousand, two hundred thirty-one".