30897 has 6 divisors (see below), whose sum is σ = 44642. Its totient is φ = 20592.

The previous prime is 30893. The next prime is 30911. The reversal of 30897 is 79803.

It is a happy number.

30897 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 24336 + 6561 = 156^2 + 81^2 .

It is not a de Polignac number, because 30897 - 2² = 30893 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30897.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30893) 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, 1708 + ... + 1725.

2³⁰⁸⁹⁷ is an apocalyptic number.

It is an amenable number.

30897 is a deficient number, since it is larger than the sum of its proper divisors (13745).

30897 is a wasteful number, since it uses less digits than its factorization.

30897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3439 (or 3436 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 30897 is about 175.7754249035. The cubic root of 30897 is about 31.3789762848.

The spelling of 30897 in words is "thirty thousand, eight hundred ninety-seven".