231995049 has 16 divisors (see below), whose sum is σ = 363405504. Its totient is φ = 129787200.

The previous prime is 231995011. The next prime is 231995051. The reversal of 231995049 is 940599132.

It is not a de Polignac number, because 231995049 - 2¹² = 231990953 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 231995049.

It is not an unprimeable number, because it can be changed into a prime (231990049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 269962 + ... + 270819.

It is an arithmetic number, because the mean of its divisors is an integer number (22712844).

Almost surely, 2^231995049 is an apocalyptic number.

It is an amenable number.

231995049 is a deficient number, since it is larger than the sum of its proper divisors (131410455).

231995049 is a wasteful number, since it uses less digits than its factorization.

231995049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540808.

The product of its (nonzero) digits is 87480, while the sum is 42.

The square root of 231995049 is about 15231.3836863234. The cubic root of 231995049 is about 614.4589941174.

The spelling of 231995049 in words is "two hundred thirty-one million, nine hundred ninety-five thousand, forty-nine".