231008892 has 12 divisors (see below), whose sum is σ = 539020776. Its totient is φ = 77002960.

The previous prime is 231008887. The next prime is 231008893. The reversal of 231008892 is 298800132.

231008892 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231008893) 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, 9625359 + ... + 9625382.

It is an arithmetic number, because the mean of its divisors is an integer number (44918398).

Almost surely, 2^231008892 is an apocalyptic number.

It is an amenable number.

231008892 is an abundant number, since it is smaller than the sum of its proper divisors (308011884).

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

231008892 is a wasteful number, since it uses less digits than its factorization.

231008892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19250748 (or 19250746 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 231008892 is about 15198.9766760792. The cubic root of 231008892 is about 613.5871168040.

The spelling of 231008892 in words is "two hundred thirty-one million, eight thousand, eight hundred ninety-two".