231984849 has 4 divisors (see below), whose sum is σ = 309313136. Its totient is φ = 154656564.

The previous prime is 231984827. The next prime is 231984853. The reversal of 231984849 is 948489132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 231984849 - 2¹² = 231980753 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231984798 and 231984807.

It is not an unprimeable number, because it can be changed into a prime (231984859) 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 3 ways as a sum of consecutive naturals, for example, 38664139 + ... + 38664144.

It is an arithmetic number, because the mean of its divisors is an integer number (77328284).

Almost surely, 2^231984849 is an apocalyptic number.

It is an amenable number.

231984849 is a deficient number, since it is larger than the sum of its proper divisors (77328287).

231984849 is an equidigital number, since it uses as much as digits as its factorization.

231984849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77328286.

The product of its digits is 497664, while the sum is 48.

The square root of 231984849 is about 15231.0488476664. The cubic root of 231984849 is about 614.4499887907.

The spelling of 231984849 in words is "two hundred thirty-one million, nine hundred eighty-four thousand, eight hundred forty-nine".