30974481 has 18 divisors (see below), whose sum is σ = 46469202. Its totient is φ = 20645280.

The previous prime is 30974431. The next prime is 30974483. The reversal of 30974481 is 18447903.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 26873856 + 4100625 = 5184^2 + 2025^2 .

It is not a de Polignac number, because 30974481 - 2¹⁰ = 30973457 is a prime.

It is a super-2 number, since 2×30974481² = 1918836946438722, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30974483) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4201 + ... + 8921.

Almost surely, 2^30974481 is an apocalyptic number.

It is an amenable number.

30974481 is a deficient number, since it is larger than the sum of its proper divisors (15494721).

30974481 is an frugal number, since it uses more digits than its factorization.

30974481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4745 (or 4724 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 30974481 is about 5565.4722171618. The cubic root of 30974481 is about 314.0518427660.

The spelling of 30974481 in words is "thirty million, nine hundred seventy-four thousand, four hundred eighty-one".