30477213 has 12 divisors (see below), whose sum is σ = 47409180. Its totient is φ = 18755136.

The previous prime is 30477193. The next prime is 30477221. The reversal of 30477213 is 31277403.

It can be written as a sum of positive squares in 2 ways, for example, as 2883204 + 27594009 = 1698^2 + 5253^2 .

It is not a de Polignac number, because 30477213 - 2⁶ = 30477149 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30477263) 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 in 11 ways as a sum of consecutive naturals, for example, 130128 + ... + 130361.

It is an arithmetic number, because the mean of its divisors is an integer number (3950765).

Almost surely, 2^30477213 is an apocalyptic number.

It is an amenable number.

30477213 is a deficient number, since it is larger than the sum of its proper divisors (16931967).

30477213 is a wasteful number, since it uses less digits than its factorization.

30477213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260508 (or 260505 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 27.

The square root of 30477213 is about 5520.6170850730. The cubic root of 30477213 is about 312.3621595823.

The spelling of 30477213 in words is "thirty million, four hundred seventy-seven thousand, two hundred thirteen".