231043549 has 16 divisors (see below), whose sum is σ = 267572160. Its totient is φ = 197167360.

The previous prime is 231043517. The next prime is 231043559. The reversal of 231043549 is 945340132.

It is not a de Polignac number, because 231043549 - 2⁵ = 231043517 is a prime.

It is a super-2 number, since 2×231043549² = 106762243069030802, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 231043549.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231043559) 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 15 ways as a sum of consecutive naturals, for example, 81447 + ... + 84235.

It is an arithmetic number, because the mean of its divisors is an integer number (16723260).

Almost surely, 2^231043549 is an apocalyptic number.

It is an amenable number.

231043549 is a deficient number, since it is larger than the sum of its proper divisors (36528611).

231043549 is a wasteful number, since it uses less digits than its factorization.

231043549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3260.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 231043549 is about 15200.1167429727. The cubic root of 231043549 is about 613.6177996422.

The spelling of 231043549 in words is "two hundred thirty-one million, forty-three thousand, five hundred forty-nine".