234442431 has 10 divisors (see below), whose sum is σ = 350216592. Its totient is φ = 156294900.

The previous prime is 234442399. The next prime is 234442441. The reversal of 234442431 is 134244432.

It is a happy number.

234442431 is a `hidden beast` number, since 234 + 4 + 424 + 3 + 1 = 666.

It is not a de Polignac number, because 234442431 - 2⁵ = 234442399 is a prime.

It is a super-2 number, since 2×234442431² = 109926506906379522, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 234442395 and 234442404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (234442441) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1447095 + ... + 1447256.

Almost surely, 2^234442431 is an apocalyptic number.

234442431 is a deficient number, since it is larger than the sum of its proper divisors (115774161).

234442431 is an equidigital number, since it uses as much as digits as its factorization.

234442431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2894363 (or 2894354 counting only the distinct ones).

The product of its digits is 9216, while the sum is 27.

The square root of 234442431 is about 15311.5130212530. The cubic root of 234442431 is about 616.6121414984.

Adding to 234442431 its reverse (134244432), we get a palindrome (368686863).

The spelling of 234442431 in words is "two hundred thirty-four million, four hundred forty-two thousand, four hundred thirty-one".