531161204 has 12 divisors (see below), whose sum is σ = 1062322464. Its totient is φ = 227640504.

The previous prime is 531161201. The next prime is 531161219. The reversal of 531161204 is 402161135.

531161204 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 531161204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531161201) 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, 9484994 + ... + 9485049.

It is an arithmetic number, because the mean of its divisors is an integer number (88526872).

Almost surely, 2^531161204 is an apocalyptic number.

It is an amenable number.

531161204 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

531161204 is a wasteful number, since it uses less digits than its factorization.

531161204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18970054 (or 18970052 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 531161204 is about 23046.9348070410. The cubic root of 531161204 is about 809.8578239510.

The spelling of 531161204 in words is "five hundred thirty-one million, one hundred sixty-one thousand, two hundred four".