231944099 has 2 divisors, whose sum is σ = 231944100. Its totient is φ = 231944098.

The previous prime is 231944087. The next prime is 231944101. The reversal of 231944099 is 990449132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231944099 - 2¹² = 231940003 is a prime.

It is a Sophie Germain prime.

Together with 231944101, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (231944899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115972049 + 115972050.

It is an arithmetic number, because the mean of its divisors is an integer number (115972050).

Almost surely, 2^231944099 is an apocalyptic number.

231944099 is a deficient number, since it is larger than the sum of its proper divisors (1).

231944099 is an equidigital number, since it uses as much as digits as its factorization.

231944099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69984, while the sum is 41.

The square root of 231944099 is about 15229.7110609493. The cubic root of 231944099 is about 614.4140089938.

The spelling of 231944099 in words is "two hundred thirty-one million, nine hundred forty-four thousand, ninety-nine".