531140539 has 8 divisors (see below), whose sum is σ = 551862000. Its totient is φ = 510579552.

The previous prime is 531140531. The next prime is 531140549. The reversal of 531140539 is 935041135.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 531140539 - 2³ = 531140531 is a prime.

It is a super-2 number, since 2×531140539² = 564220544338421042, 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 531140539.

It is not an unprimeable number, because it can be changed into a prime (531140531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33349 + ... + 46630.

It is an arithmetic number, because the mean of its divisors is an integer number (68982750).

Almost surely, 2^531140539 is an apocalyptic number.

531140539 is a deficient number, since it is larger than the sum of its proper divisors (20721461).

531140539 is a wasteful number, since it uses less digits than its factorization.

531140539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80237.

The product of its (nonzero) digits is 8100, while the sum is 31.

The square root of 531140539 is about 23046.4864784201. The cubic root of 531140539 is about 809.8473212205.

The spelling of 531140539 in words is "five hundred thirty-one million, one hundred forty thousand, five hundred thirty-nine".