231404099 has 2 divisors, whose sum is σ = 231404100. Its totient is φ = 231404098.

The previous prime is 231404039. The next prime is 231404141. The reversal of 231404099 is 990404132.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231404099 - 2¹² = 231400003 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (231404039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115702049 + 115702050.

It is an arithmetic number, because the mean of its divisors is an integer number (115702050).

Almost surely, 2^231404099 is an apocalyptic number.

231404099 is a deficient number, since it is larger than the sum of its proper divisors (1).

231404099 is an equidigital number, since it uses as much as digits as its factorization.

231404099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 231404099 is about 15211.9722258490. The cubic root of 231404099 is about 613.9368230682.

The spelling of 231404099 in words is "two hundred thirty-one million, four hundred four thousand, ninety-nine".