231240299 has 4 divisors (see below), whose sum is σ = 231447336. Its totient is φ = 231033264.

The previous prime is 231240281. The next prime is 231240311. The reversal of 231240299 is 992042132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 231240299 - 2⁸ = 231240043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231240199) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101834 + ... + 104079.

It is an arithmetic number, because the mean of its divisors is an integer number (57861834).

Almost surely, 2^231240299 is an apocalyptic number.

231240299 is a deficient number, since it is larger than the sum of its proper divisors (207037).

231240299 is a wasteful number, since it uses less digits than its factorization.

231240299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207036.

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

The square root of 231240299 is about 15206.5873554851. The cubic root of 231240299 is about 613.7919299436.

The spelling of 231240299 in words is "two hundred thirty-one million, two hundred forty thousand, two hundred ninety-nine".