231270720 has 224 divisors, whose sum is σ = 800575488. Its totient is φ = 56328192.

The previous prime is 231270719. The next prime is 231270733. The reversal of 231270720 is 27072132.

It is a super-2 number, since 2×231270720² = 106972291858636800, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 603649 + ... + 604031.

Almost surely, 2^231270720 is an apocalyptic number.

231270720 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 231270720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (400287744).

231270720 is an abundant number, since it is smaller than the sum of its proper divisors (569304768).

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

231270720 is a wasteful number, since it uses less digits than its factorization.

231270720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457 (or 447 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 24.

The square root of 231270720 is about 15207.5875798892. The cubic root of 231270720 is about 613.8188447239.

The spelling of 231270720 in words is "two hundred thirty-one million, two hundred seventy thousand, seven hundred twenty".