231451312 has 80 divisors (see below), whose sum is σ = 489968640. Its totient is φ = 105560064.

The previous prime is 231451303. The next prime is 231451321. The reversal of 231451312 is 213154132.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (231451303) and next prime (231451321).

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, 1385853 + ... + 1386019.

It is an arithmetic number, because the mean of its divisors is an integer number (6124608).

Almost surely, 2^231451312 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 231451312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (244984320).

231451312 is an abundant number, since it is smaller than the sum of its proper divisors (258517328).

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

231451312 is a wasteful number, since it uses less digits than its factorization.

231451312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338 (or 332 counting only the distinct ones).

The product of its digits is 720, while the sum is 22.

The square root of 231451312 is about 15213.5239836141. The cubic root of 231451312 is about 613.9785737376.

The spelling of 231451312 in words is "two hundred thirty-one million, four hundred fifty-one thousand, three hundred twelve".