233143402 has 4 divisors (see below), whose sum is σ = 349715106. Its totient is φ = 116571700.

The previous prime is 233143381. The next prime is 233143447. The reversal of 233143402 is 204341332.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 217533001 + 15610401 = 14749^2 + 3951^2 .

It is a super-2 number, since 2×233143402² = 108711691792267208, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58285849 + ... + 58285852.

Almost surely, 2^233143402 is an apocalyptic number.

233143402 is a deficient number, since it is larger than the sum of its proper divisors (116571704).

233143402 is a wasteful number, since it uses less digits than its factorization.

233143402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116571703.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 233143402 is about 15269.0340886384. The cubic root of 233143402 is about 615.4711633858.

Adding to 233143402 its reverse (204341332), we get a palindrome (437484734).

The spelling of 233143402 in words is "two hundred thirty-three million, one hundred forty-three thousand, four hundred two".