231790 has 16 divisors (see below), whose sum is σ = 449568. Its totient is φ = 85536.

The previous prime is 231779. The next prime is 231799. The reversal of 231790 is 97132.

231790 = 98² + 99² + ... + 117².

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231799) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 762 + ... + 1021.

It is an arithmetic number, because the mean of its divisors is an integer number (28098).

2²³¹⁷⁹⁰ is an apocalyptic number.

231790 is a deficient number, since it is larger than the sum of its proper divisors (217778).

231790 is a wasteful number, since it uses less digits than its factorization.

231790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1803.

The product of its (nonzero) digits is 378, while the sum is 22.

The square root of 231790 is about 481.4457394141. The cubic root of 231790 is about 61.4277910741.

The spelling of 231790 in words is "two hundred thirty-one thousand, seven hundred ninety".