231409814 has 24 divisors (see below), whose sum is σ = 371347200. Its totient is φ = 108127616.

The previous prime is 231409799. The next prime is 231409847. The reversal of 231409814 is 418904132.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84779 + ... + 87465.

It is an arithmetic number, because the mean of its divisors is an integer number (15472800).

Almost surely, 2^231409814 is an apocalyptic number.

231409814 is a deficient number, since it is larger than the sum of its proper divisors (139937386).

231409814 is a wasteful number, since it uses less digits than its factorization.

231409814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2872 (or 2855 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 231409814 is about 15212.1600701544. The cubic root of 231409814 is about 613.9418771706.

The spelling of 231409814 in words is "two hundred thirty-one million, four hundred nine thousand, eight hundred fourteen".