231242368 has 128 divisors (see below), whose sum is σ = 563040000. Its totient is φ = 94381056.

The previous prime is 231242359. The next prime is 231242383. The reversal of 231242368 is 863242132.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1009678 + ... + 1009906.

It is an arithmetic number, because the mean of its divisors is an integer number (4398750).

Almost surely, 2^231242368 is an apocalyptic number.

231242368 is a gapful number since it is divisible by the number (28) 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 231242368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (281520000).

231242368 is an abundant number, since it is smaller than the sum of its proper divisors (331797632).

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

231242368 is an equidigital number, since it uses as much as digits as its factorization.

231242368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287 (or 261 counting only the distinct ones).

The product of its digits is 13824, while the sum is 31.

The square root of 231242368 is about 15206.6553850608. The cubic root of 231242368 is about 613.7937605526.

The spelling of 231242368 in words is "two hundred thirty-one million, two hundred forty-two thousand, three hundred sixty-eight".