231142912 has 240 divisors, whose sum is σ = 640021536. Its totient is φ = 81100800.

The previous prime is 231142907. The next prime is 231142979. The reversal of 231142912 is 219241132.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5637612 + ... + 5637652.

Almost surely, 2^231142912 is an apocalyptic number.

231142912 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231142912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (320010768).

231142912 is an abundant number, since it is smaller than the sum of its proper divisors (408878624).

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

231142912 is a wasteful number, since it uses less digits than its factorization.

231142912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101 (or 74 counting only the distinct ones).

The product of its digits is 864, while the sum is 25.

The square root of 231142912 is about 15203.3848862679. The cubic root of 231142912 is about 613.7057515563.

The spelling of 231142912 in words is "two hundred thirty-one million, one hundred forty-two thousand, nine hundred twelve".