231402912 has 144 divisors (see below), whose sum is σ = 697273920. Its totient is φ = 66932736.

The previous prime is 231402887. The next prime is 231402959. The reversal of 231402912 is 219204132.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 275389 + ... + 276227.

It is an arithmetic number, because the mean of its divisors is an integer number (4842180).

Almost surely, 2^231402912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231402912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (348636960).

231402912 is an abundant number, since it is smaller than the sum of its proper divisors (465871008).

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

231402912 is a wasteful number, since it uses less digits than its factorization.

231402912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 895 (or 874 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 231402912 is about 15211.9332104766. The cubic root of 231402912 is about 613.9357733255.

The spelling of 231402912 in words is "two hundred thirty-one million, four hundred two thousand, nine hundred twelve".