233632161 has 32 divisors (see below), whose sum is σ = 396564480. Its totient is φ = 133167888.

The previous prime is 233632127. The next prime is 233632177. The reversal of 233632161 is 161236332.

It is a happy number.

233632161 is a `hidden beast` number, since 2 + 336 + 321 + 6 + 1 = 666.

It is not a de Polignac number, because 233632161 - 2¹⁵ = 233599393 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (233632181) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 86940 + ... + 89586.

It is an arithmetic number, because the mean of its divisors is an integer number (12392640).

Almost surely, 2^233632161 is an apocalyptic number.

233632161 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

233632161 is a deficient number, since it is larger than the sum of its proper divisors (162932319).

233632161 is a wasteful number, since it uses less digits than its factorization.

233632161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3130 (or 3124 counting only the distinct ones).

The product of its digits is 3888, while the sum is 27.

The square root of 233632161 is about 15285.0306182225. The cubic root of 233632161 is about 615.9009519515.

Adding to 233632161 its reverse (161236332), we get a palindrome (394868493).

The spelling of 233632161 in words is "two hundred thirty-three million, six hundred thirty-two thousand, one hundred sixty-one".