231270 has 32 divisors (see below), whose sum is σ = 598752. Its totient is φ = 56832.

The previous prime is 231269. The next prime is 231271. The reversal of 231270 is 72132.

It is an interprime number because it is at equal distance from previous prime (231269) and next prime (231271).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94 + ... + 686.

It is an arithmetic number, because the mean of its divisors is an integer number (18711).

2²³¹²⁷⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (299376).

231270 is an abundant number, since it is smaller than the sum of its proper divisors (367482).

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

231270 is a wasteful number, since it uses less digits than its factorization.

231270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616.

The product of its (nonzero) digits is 84, while the sum is 15.

The square root of 231270 is about 480.9053961020. The cubic root of 231270 is about 61.3818207736.

The spelling of 231270 in words is "two hundred thirty-one thousand, two hundred seventy".