532640231 has 4 divisors (see below), whose sum is σ = 532870872. Its totient is φ = 532409592.

The previous prime is 532640221. The next prime is 532640239. The reversal of 532640231 is 132046235.

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 532640231 - 2¹⁰ = 532639207 is a prime.

It is a super-3 number, since 3×532640231³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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 532640231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (532640239) 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, 111821 + ... + 116486.

It is an arithmetic number, because the mean of its divisors is an integer number (133217718).

Almost surely, 2^532640231 is an apocalyptic number.

532640231 is a deficient number, since it is larger than the sum of its proper divisors (230641).

532640231 is a wasteful number, since it uses less digits than its factorization.

532640231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230640.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 532640231 is about 23078.9997833528. Note that the first 3 decimals coincide. The cubic root of 532640231 is about 810.6088147547.

Adding to 532640231 its reverse (132046235), we get a palindrome (664686466).

The spelling of 532640231 in words is "five hundred thirty-two million, six hundred forty thousand, two hundred thirty-one".