231380 has 24 divisors (see below), whose sum is σ = 508032. Its totient is φ = 88352.

The previous prime is 231379. The next prime is 231409. The reversal of 231380 is 83132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209 + ... + 711.

It is an arithmetic number, because the mean of its divisors is an integer number (21168).

2²³¹³⁸⁰ is an apocalyptic number.

231380 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 231380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (254016).

231380 is an abundant number, since it is smaller than the sum of its proper divisors (276652).

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

231380 is a wasteful number, since it uses less digits than its factorization.

231380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535 (or 533 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 231380 is about 481.0197501143. The cubic root of 231380 is about 61.3915510024.

The spelling of 231380 in words is "two hundred thirty-one thousand, three hundred eighty".