233506983 has 4 divisors (see below), whose sum is σ = 311342648. Its totient is φ = 155671320.

The previous prime is 233506981. The next prime is 233506991. The reversal of 233506983 is 389605332.

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

It is not a de Polignac number, because 233506983 - 2¹ = 233506981 is a prime.

It is a super-2 number, since 2×233506983² = 109051022219524578, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233506981) 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, 38917828 + ... + 38917833.

It is an arithmetic number, because the mean of its divisors is an integer number (77835662).

Almost surely, 2^233506983 is an apocalyptic number.

233506983 is a deficient number, since it is larger than the sum of its proper divisors (77835665).

233506983 is an equidigital number, since it uses as much as digits as its factorization.

233506983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77835664.

The product of its (nonzero) digits is 116640, while the sum is 39.

The square root of 233506983 is about 15280.9352789677. The cubic root of 233506983 is about 615.7909342461.

The spelling of 233506983 in words is "two hundred thirty-three million, five hundred six thousand, nine hundred eighty-three".