231434405 has 8 divisors (see below), whose sum is σ = 277955712. Its totient is φ = 184991248.

The previous prime is 231434387. The next prime is 231434407. The reversal of 231434405 is 504434132.

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

It is a cyclic number.

It is not a de Polignac number, because 231434405 - 2⁶ = 231434341 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231434407) 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, 12809 + ... + 25038.

It is an arithmetic number, because the mean of its divisors is an integer number (34744464).

Almost surely, 2^231434405 is an apocalyptic number.

It is an amenable number.

231434405 is a deficient number, since it is larger than the sum of its proper divisors (46521307).

231434405 is a wasteful number, since it uses less digits than its factorization.

231434405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39075.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 231434405 is about 15212.9683165384. The cubic root of 231434405 is about 613.9636234537.

Adding to 231434405 its reverse (504434132), we get a palindrome (735868537).

The spelling of 231434405 in words is "two hundred thirty-one million, four hundred thirty-four thousand, four hundred five".