233031121 has 4 divisors (see below), whose sum is σ = 246738852. Its totient is φ = 219323392.

The previous prime is 233031107. The next prime is 233031133. The reversal of 233031121 is 121130332.

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

It can be written as a sum of positive squares in 2 ways, for example, as 65691025 + 167340096 = 8105^2 + 12936^2 .

It is not a de Polignac number, because 233031121 - 2²³ = 224642513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 233031095 and 233031104.

It is not an unprimeable number, because it can be changed into a prime (233031221) 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, 6853840 + ... + 6853873.

It is an arithmetic number, because the mean of its divisors is an integer number (61684713).

Almost surely, 2^233031121 is an apocalyptic number.

It is an amenable number.

233031121 is a deficient number, since it is larger than the sum of its proper divisors (13707731).

233031121 is a wasteful number, since it uses less digits than its factorization.

233031121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13707730.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 233031121 is about 15265.3568906855. The cubic root of 233031121 is about 615.3723446419.

Adding to 233031121 its reverse (121130332), we get a palindrome (354161453).

It can be divided in two parts, 2330311 and 21, that added together give a palindrome (2330332).

The spelling of 233031121 in words is "two hundred thirty-three million, thirty-one thousand, one hundred twenty-one".