531297312 has 192 divisors, whose sum is σ = 1746388224. Its totient is φ = 137687040.

The previous prime is 531297289. The next prime is 531297329. The reversal of 531297312 is 213792135.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 532398 + ... + 533394.

It is an arithmetic number, because the mean of its divisors is an integer number (9095772).

Almost surely, 2^531297312 is an apocalyptic number.

531297312 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 531297312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (873194112).

531297312 is an abundant number, since it is smaller than the sum of its proper divisors (1215090912).

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

531297312 is a wasteful number, since it uses less digits than its factorization.

531297312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1091 (or 1083 counting only the distinct ones).

The product of its digits is 11340, while the sum is 33.

The square root of 531297312 is about 23049.8874617643. The cubic root of 531297312 is about 809.9269923529.

The spelling of 531297312 in words is "five hundred thirty-one million, two hundred ninety-seven thousand, three hundred twelve".