897508031 has 4 divisors (see below), whose sum is σ = 1025723472. Its totient is φ = 769292592.

The previous prime is 897507991. The next prime is 897508033. The reversal of 897508031 is 130805798.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 897508031 - 2¹⁰ = 897507007 is a prime.

It is a super-2 number, since 2×897508031² = 1611041331418993922, which contains 22 as substring.

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 897508031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (897508033) 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, 64107710 + ... + 64107723.

It is an arithmetic number, because the mean of its divisors is an integer number (256430868).

Almost surely, 2^897508031 is an apocalyptic number.

897508031 is a deficient number, since it is larger than the sum of its proper divisors (128215441).

897508031 is a wasteful number, since it uses less digits than its factorization.

897508031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128215440.

The product of its (nonzero) digits is 60480, while the sum is 41.

The square root of 897508031 is about 29958.4383938816. The cubic root of 897508031 is about 964.5974610384.

The spelling of 897508031 in words is "eight hundred ninety-seven million, five hundred eight thousand, thirty-one".