231141899 has 4 divisors (see below), whose sum is σ = 236517336. Its totient is φ = 225766464.

The previous prime is 231141853. The next prime is 231141901. The reversal of 231141899 is 998141132.

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 231141899 - 2²⁰ = 230093323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231141499) 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, 2687654 + ... + 2687739.

It is an arithmetic number, because the mean of its divisors is an integer number (59129334).

Almost surely, 2^231141899 is an apocalyptic number.

231141899 is a deficient number, since it is larger than the sum of its proper divisors (5375437).

231141899 is an equidigital number, since it uses as much as digits as its factorization.

231141899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5375436.

The product of its digits is 15552, while the sum is 38.

The square root of 231141899 is about 15203.3515712819. The cubic root of 231141899 is about 613.7048550188.

The spelling of 231141899 in words is "two hundred thirty-one million, one hundred forty-one thousand, eight hundred ninety-nine".