231383 has 4 divisors (see below), whose sum is σ = 236808. Its totient is φ = 225960.

The previous prime is 231379. The next prime is 231409. The reversal of 231383 is 383132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 231383 - 2² = 231379 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2648 + ... + 2733.

It is an arithmetic number, because the mean of its divisors is an integer number (59202).

2²³¹³⁸³ is an apocalyptic number.

231383 is a deficient number, since it is larger than the sum of its proper divisors (5425).

231383 is an equidigital number, since it uses as much as digits as its factorization.

231383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5424.

The product of its digits is 432, while the sum is 20.

The square root of 231383 is about 481.0228684792. The cubic root of 231383 is about 61.3918163291.

The spelling of 231383 in words is "two hundred thirty-one thousand, three hundred eighty-three".