30223917 has 6 divisors (see below), whose sum is σ = 43656782. Its totient is φ = 20149272.

The previous prime is 30223903. The next prime is 30223951. The reversal of 30223917 is 71932203.

It can be written as a sum of positive squares in only one way, i.e., 22982436 + 7241481 = 4794^2 + 2691^2 .

It is not a de Polignac number, because 30223917 - 2¹² = 30219821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30223957) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1679098 + ... + 1679115.

Almost surely, 2^30223917 is an apocalyptic number.

It is an amenable number.

30223917 is a deficient number, since it is larger than the sum of its proper divisors (13432865).

30223917 is a wasteful number, since it uses less digits than its factorization.

30223917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3358219 (or 3358216 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 30223917 is about 5497.6283068247. The cubic root of 30223917 is about 311.4944042513.

The spelling of 30223917 in words is "thirty million, two hundred twenty-three thousand, nine hundred seventeen".