231243099 has 8 divisors (see below), whose sum is σ = 308420112. Its totient is φ = 154114080.

The previous prime is 231243097. The next prime is 231243109. The reversal of 231243099 is 990342132.

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

It is not a de Polignac number, because 231243099 - 2¹ = 231243097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231243097) 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 in 7 ways as a sum of consecutive naturals, for example, 1377 + ... + 21549.

It is an arithmetic number, because the mean of its divisors is an integer number (38552514).

Almost surely, 2^231243099 is an apocalyptic number.

231243099 is a deficient number, since it is larger than the sum of its proper divisors (77177013).

231243099 is a wasteful number, since it uses less digits than its factorization.

231243099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23997.

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 231243099 is about 15206.6794205704. The cubic root of 231243099 is about 613.7944073239.

The spelling of 231243099 in words is "two hundred thirty-one million, two hundred forty-three thousand, ninety-nine".