30897153 has 16 divisors (see below), whose sum is σ = 52312960. Its totient is φ = 17655408.

The previous prime is 30897133. The next prime is 30897161. The reversal of 30897153 is 35179803.

It is not a de Polignac number, because 30897153 - 2⁵ = 30897121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30897133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81550 + ... + 81927.

It is an arithmetic number, because the mean of its divisors is an integer number (3269560).

Almost surely, 2^30897153 is an apocalyptic number.

It is an amenable number.

30897153 is a deficient number, since it is larger than the sum of its proper divisors (21415807).

30897153 is a wasteful number, since it uses less digits than its factorization.

30897153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163493 (or 163487 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 30897153 is about 5558.5207564603. The cubic root of 30897153 is about 313.7902808026.

It can be divided in two parts, 308 and 97153, that added together give a triangular number (97461 = T₄₄₁).

The spelling of 30897153 in words is "thirty million, eight hundred ninety-seven thousand, one hundred fifty-three".