234444431 has 4 divisors (see below), whose sum is σ = 252478632. Its totient is φ = 216410232.

The previous prime is 234444409. The next prime is 234444443. The reversal of 234444431 is 134444432.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 234444431 - 2²² = 230250127 is a prime.

It is a super-2 number, since 2×234444431² = 109928382453827522, 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 = 234444394 and 234444403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (234444461) 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, 9017081 + ... + 9017106.

It is an arithmetic number, because the mean of its divisors is an integer number (63119658).

Almost surely, 2^234444431 is an apocalyptic number.

234444431 is a deficient number, since it is larger than the sum of its proper divisors (18034201).

234444431 is a wasteful number, since it uses less digits than its factorization.

234444431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18034200.

The product of its digits is 18432, while the sum is 29.

The square root of 234444431 is about 15311.5783314458. The cubic root of 234444431 is about 616.6138949079.

Adding to 234444431 its reverse (134444432), we get a palindrome (368888863).

Subtracting from 234444431 its reverse (134444432), we obtain a palindrome (99999999).

The spelling of 234444431 in words is "two hundred thirty-four million, four hundred forty-four thousand, four hundred thirty-one".