30312297 has 12 divisors (see below), whose sum is σ = 43838340. Its totient is φ = 20183328.

The previous prime is 30312283. The next prime is 30312299. The reversal of 30312297 is 79221303.

It can be written as a sum of positive squares in 2 ways, for example, as 11048976 + 19263321 = 3324^2 + 4389^2 .

It is not a de Polignac number, because 30312297 - 2⁴ = 30312281 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 30312297.

It is not an unprimeable number, because it can be changed into a prime (30312299) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8463 + ... + 11499.

It is an arithmetic number, because the mean of its divisors is an integer number (3653195).

Almost surely, 2^30312297 is an apocalyptic number.

It is an amenable number.

30312297 is a deficient number, since it is larger than the sum of its proper divisors (13526043).

30312297 is a wasteful number, since it uses less digits than its factorization.

30312297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4152 (or 4149 counting only the distinct ones).

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

The square root of 30312297 is about 5505.6604508451. The cubic root of 30312297 is about 311.7977300898.

The spelling of 30312297 in words is "thirty million, three hundred twelve thousand, two hundred ninety-seven".