234009431 has 4 divisors (see below), whose sum is σ = 234808392. Its totient is φ = 233210472.

The previous prime is 234009401. The next prime is 234009443. The reversal of 234009431 is 134900432.

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 234009431 - 2⁶ = 234009367 is a prime.

It is a super-2 number, since 2×234009431² = 109520827593887522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 234009431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (234009401) 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, 399041 + ... + 399626.

It is an arithmetic number, because the mean of its divisors is an integer number (58702098).

Almost surely, 2^234009431 is an apocalyptic number.

234009431 is a deficient number, since it is larger than the sum of its proper divisors (798961).

234009431 is an equidigital number, since it uses as much as digits as its factorization.

234009431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 798960.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 234009431 is about 15297.3667995508. The cubic root of 234009431 is about 616.2322933085.

Adding to 234009431 its reverse (134900432), we get a palindrome (368909863).

The spelling of 234009431 in words is "two hundred thirty-four million, nine thousand, four hundred thirty-one".