231038864 has 40 divisors (see below), whose sum is σ = 533834880. Its totient is φ = 94710528.

The previous prime is 231038861. The next prime is 231038947. The reversal of 231038864 is 468830132.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (231038861) 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, 42269 + ... + 47420.

It is an arithmetic number, because the mean of its divisors is an integer number (13345872).

Almost surely, 2^231038864 is an apocalyptic number.

It is an amenable number.

231038864 is an abundant number, since it is smaller than the sum of its proper divisors (302796016).

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

231038864 is a wasteful number, since it uses less digits than its factorization.

231038864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89727 (or 89721 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 231038864 is about 15199.9626315330. The cubic root of 231038864 is about 613.6136520565.

Adding to 231038864 its reverse (468830132), we get a palindrome (699868996).

The spelling of 231038864 in words is "two hundred thirty-one million, thirty-eight thousand, eight hundred sixty-four".