30472213 has 2 divisors, whose sum is σ = 30472214. Its totient is φ = 30472212.

The previous prime is 30472199. The next prime is 30472229. The reversal of 30472213 is 31227403.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27060804 + 3411409 = 5202^2 + 1847^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30472213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30475213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15236106 + 15236107.

It is an arithmetic number, because the mean of its divisors is an integer number (15236107).

Almost surely, 2^30472213 is an apocalyptic number.

It is an amenable number.

30472213 is a deficient number, since it is larger than the sum of its proper divisors (1).

30472213 is an equidigital number, since it uses as much as digits as its factorization.

30472213 is an evil number, because the sum of its binary digits is even.

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

The square root of 30472213 is about 5520.1642185718. The cubic root of 30472213 is about 312.3450769156.

Adding to 30472213 its reverse (31227403), we get a palindrome (61699616).

The spelling of 30472213 in words is "thirty million, four hundred seventy-two thousand, two hundred thirteen".