30523397 has 4 divisors (see below), whose sum is σ = 30953376. Its totient is φ = 30093420.

The previous prime is 30523387. The next prime is 30523403. The reversal of 30523397 is 79332503.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30523397 - 2²⁴ = 13746181 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 (30523327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214883 + ... + 215024.

It is an arithmetic number, because the mean of its divisors is an integer number (7738344).

Almost surely, 2^30523397 is an apocalyptic number.

It is an amenable number.

30523397 is a deficient number, since it is larger than the sum of its proper divisors (429979).

30523397 is an equidigital number, since it uses as much as digits as its factorization.

30523397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429978.

The product of its (nonzero) digits is 17010, while the sum is 32.

The square root of 30523397 is about 5524.7983673615. The cubic root of 30523397 is about 312.5198604978.

The spelling of 30523397 in words is "thirty million, five hundred twenty-three thousand, three hundred ninety-seven".