233142431 has 8 divisors (see below), whose sum is σ = 239821824. Its totient is φ = 226520280.

The previous prime is 233142347. The next prime is 233142449. The reversal of 233142431 is 134241332.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-233142431 is a prime.

It is a super-2 number, since 2×233142431² = 108710786265179522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 233142397 and 233142406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233142451) 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, 5981 + ... + 22406.

It is an arithmetic number, because the mean of its divisors is an integer number (29977728).

Almost surely, 2^233142431 is an apocalyptic number.

233142431 is a deficient number, since it is larger than the sum of its proper divisors (6679393).

233142431 is a wasteful number, since it uses less digits than its factorization.

233142431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28621.

The product of its digits is 1728, while the sum is 23.

The square root of 233142431 is about 15269.0022922259. The cubic root of 233142431 is about 615.4703089426.

Adding to 233142431 its reverse (134241332), we get a palindrome (367383763).

The spelling of 233142431 in words is "two hundred thirty-three million, one hundred forty-two thousand, four hundred thirty-one".