233997 has 4 divisors (see below), whose sum is σ = 312000. Its totient is φ = 155996.

The previous prime is 233993. The next prime is 234007. The reversal of 233997 is 799332.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 233997 - 2² = 233993 is a prime.

It is a D-number.

233997 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233993) 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, 38997 + ... + 39002.

It is an arithmetic number, because the mean of its divisors is an integer number (78000).

2²³³⁹⁹⁷ is an apocalyptic number.

It is an amenable number.

233997 is a deficient number, since it is larger than the sum of its proper divisors (78003).

233997 is an equidigital number, since it uses as much as digits as its factorization.

233997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78002.

The product of its digits is 10206, while the sum is 33.

The square root of 233997 is about 483.7323640196. The cubic root of 233997 is about 61.6221381328.

The spelling of 233997 in words is "two hundred thirty-three thousand, nine hundred ninety-seven".