231798564 has 24 divisors (see below), whose sum is σ = 600959520. Its totient is φ = 77266152.

The previous prime is 231798559. The next prime is 231798569. The reversal of 231798564 is 465897132.

It is an interprime number because it is at equal distance from previous prime (231798559) and next prime (231798569).

It is not an unprimeable number, because it can be changed into a prime (231798569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1073034 + ... + 1073249.

It is an arithmetic number, because the mean of its divisors is an integer number (25039980).

Almost surely, 2^231798564 is an apocalyptic number.

It is an amenable number.

231798564 is an abundant number, since it is smaller than the sum of its proper divisors (369160956).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231798564 is a wasteful number, since it uses less digits than its factorization.

231798564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2146296 (or 2146288 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 231798564 is about 15224.9323151205. The cubic root of 231798564 is about 614.2854759380.

The spelling of 231798564 in words is "two hundred thirty-one million, seven hundred ninety-eight thousand, five hundred sixty-four".