231572 has 24 divisors (see below), whose sum is σ = 467040. Its totient is φ = 99360.

The previous prime is 231571. The next prime is 231589. The reversal of 231572 is 275132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 698 + ... + 974.

It is an arithmetic number, because the mean of its divisors is an integer number (19460).

2²³¹⁵⁷² is an apocalyptic number.

231572 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

231572 is an abundant number, since it is smaller than the sum of its proper divisors (235468).

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

231572 is a wasteful number, since it uses less digits than its factorization.

231572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311 (or 309 counting only the distinct ones).

The product of its digits is 420, while the sum is 20.

The square root of 231572 is about 481.2192847341. The cubic root of 231572 is about 61.4085272881.

The spelling of 231572 in words is "two hundred thirty-one thousand, five hundred seventy-two".