531663243 has 4 divisors (see below), whose sum is σ = 708884328. Its totient is φ = 354442160.

The previous prime is 531663233. The next prime is 531663269. The reversal of 531663243 is 342366135.

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 531663243 - 2⁴ = 531663227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (531663233) 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, 88610538 + ... + 88610543.

It is an arithmetic number, because the mean of its divisors is an integer number (177221082).

Almost surely, 2^531663243 is an apocalyptic number.

531663243 is a deficient number, since it is larger than the sum of its proper divisors (177221085).

531663243 is a wasteful number, since it uses less digits than its factorization.

531663243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177221084.

The product of its digits is 38880, while the sum is 33.

The square root of 531663243 is about 23057.8238999260. The cubic root of 531663243 is about 810.1128954058.

The spelling of 531663243 in words is "five hundred thirty-one million, six hundred sixty-three thousand, two hundred forty-three".