233161231 has 8 divisors (see below), whose sum is σ = 237907584. Its totient is φ = 228455640.

The previous prime is 233161213. The next prime is 233161249. The reversal of 233161231 is 132161332.

It is an interprime number because it is at equal distance from previous prime (233161213) and next prime (233161249).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 233161231 - 2¹¹ = 233159183 is a prime.

It is a super-2 number, since 2×233161231² = 108728319282870722, 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 (233161931) 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, 1500 + ... + 21646.

It is an arithmetic number, because the mean of its divisors is an integer number (29738448).

Almost surely, 2^233161231 is an apocalyptic number.

233161231 is a deficient number, since it is larger than the sum of its proper divisors (4746353).

233161231 is a wasteful number, since it uses less digits than its factorization.

233161231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20381.

The product of its digits is 648, while the sum is 22.

The square root of 233161231 is about 15269.6179061560. The cubic root of 233161231 is about 615.4868518070.

The spelling of 233161231 in words is "two hundred thirty-three million, one hundred sixty-one thousand, two hundred thirty-one".