231370720 has 96 divisors (see below), whose sum is σ = 627576768. Its totient is φ = 78962688.

The previous prime is 231370693. The next prime is 231370739. The reversal of 231370720 is 27073132.

It is a congruent number.

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, 377134 + ... + 377746.

It is an arithmetic number, because the mean of its divisors is an integer number (6537258).

Almost surely, 2^231370720 is an apocalyptic number.

231370720 is a gapful number since it is divisible by the number (20) 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 231370720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (313788384).

231370720 is an abundant number, since it is smaller than the sum of its proper divisors (396206048).

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

231370720 is a wasteful number, since it uses less digits than its factorization.

231370720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 972 (or 964 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 25.

The square root of 231370720 is about 15210.8750570110. The cubic root of 231370720 is about 613.9073024407.

The spelling of 231370720 in words is "two hundred thirty-one million, three hundred seventy thousand, seven hundred twenty".