231272370 has 144 divisors (see below), whose sum is σ = 728619840. Its totient is φ = 49719744.

The previous prime is 231272359. The next prime is 231272401. The reversal of 231272370 is 73272132.

It is a happy number.

231272370 is a `hidden beast` number, since 23 + 1 + 272 + 370 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1663761 + ... + 1663899.

It is an arithmetic number, because the mean of its divisors is an integer number (5059860).

Almost surely, 2^231272370 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231272370, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (364309920).

231272370 is an abundant number, since it is smaller than the sum of its proper divisors (497347470).

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

231272370 is a wasteful number, since it uses less digits than its factorization.

231272370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317 (or 175 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 27.

The square root of 231272370 is about 15207.6418290279. The cubic root of 231272370 is about 613.8203044831.

The spelling of 231272370 in words is "two hundred thirty-one million, two hundred seventy-two thousand, three hundred seventy".