531327636 has 36 divisors (see below), whose sum is σ = 1534947232. Its totient is φ = 151807824.

The previous prime is 531327619. The next prime is 531327637. The reversal of 531327636 is 636723135.

531327636 is a `hidden beast` number, since 5 + 3 + 13 + 2 + 7 + 636 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 531327636.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531327637) 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 11 ways as a sum of consecutive naturals, for example, 1053970 + ... + 1054473.

Almost surely, 2^531327636 is an apocalyptic number.

It is an amenable number.

531327636 is an abundant number, since it is smaller than the sum of its proper divisors (1003619596).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

531327636 is a wasteful number, since it uses less digits than its factorization.

531327636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2108460 (or 2108455 counting only the distinct ones).

The product of its digits is 68040, while the sum is 36.

The square root of 531327636 is about 23050.5452430089. The cubic root of 531327636 is about 809.9424010254.

The spelling of 531327636 in words is "five hundred thirty-one million, three hundred twenty-seven thousand, six hundred thirty-six".