231245564 has 24 divisors (see below), whose sum is σ = 442205568. Its totient is φ = 104936240.

The previous prime is 231245551. The next prime is 231245569. The reversal of 231245564 is 465542132.

It is a self number, because there is not a number n which added to its sum of digits gives 231245564.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231245569) 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, 24407 + ... + 32529.

It is an arithmetic number, because the mean of its divisors is an integer number (18425232).

Almost surely, 2^231245564 is an apocalyptic number.

It is an amenable number.

231245564 is a deficient number, since it is larger than the sum of its proper divisors (210960004).

231245564 is a wasteful number, since it uses less digits than its factorization.

231245564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8785 (or 8783 counting only the distinct ones).

The product of its digits is 28800, while the sum is 32.

The square root of 231245564 is about 15206.7604702645. The cubic root of 231245564 is about 613.7965882867.

Adding to 231245564 its reverse (465542132), we get a palindrome (696787696).

The spelling of 231245564 in words is "two hundred thirty-one million, two hundred forty-five thousand, five hundred sixty-four".