30497933 has 4 divisors (see below), whose sum is σ = 30616860. Its totient is φ = 30379008.

The previous prime is 30497917. The next prime is 30497941. The reversal of 30497933 is 33979403.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33979403 = 227 ⋅149689.

It can be written as a sum of positive squares in 2 ways, for example, as 14160169 + 16337764 = 3763^2 + 4042^2 .

It is a cyclic number.

It is not a de Polignac number, because 30497933 - 2⁴ = 30497917 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 (30497963) 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 3 ways as a sum of consecutive naturals, for example, 59078 + ... + 59591.

It is an arithmetic number, because the mean of its divisors is an integer number (7654215).

Almost surely, 2^30497933 is an apocalyptic number.

It is an amenable number.

30497933 is a deficient number, since it is larger than the sum of its proper divisors (118927).

30497933 is a wasteful number, since it uses less digits than its factorization.

30497933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118926.

The product of its (nonzero) digits is 61236, while the sum is 38.

The square root of 30497933 is about 5522.4933680359. The cubic root of 30497933 is about 312.4329302463.

The spelling of 30497933 in words is "thirty million, four hundred ninety-seven thousand, nine hundred thirty-three".