531312152 has 64 divisors (see below), whose sum is σ = 1212045120. Its totient is φ = 213147648.

The previous prime is 531312127. The next prime is 531312239. The reversal of 531312152 is 251213135.

It is a happy number.

It is a super-2 number, since 2×531312152² = 564585205725742208, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 186128 + ... + 188960.

It is an arithmetic number, because the mean of its divisors is an integer number (18938205).

Almost surely, 2^531312152 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 531312152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (606022560).

531312152 is an abundant number, since it is smaller than the sum of its proper divisors (680732968).

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

531312152 is a wasteful number, since it uses less digits than its factorization.

531312152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3060 (or 3056 counting only the distinct ones).

The product of its digits is 900, while the sum is 23.

The square root of 531312152 is about 23050.2093699819. The cubic root of 531312152 is about 809.9345331431.

Adding to 531312152 its reverse (251213135), we get a palindrome (782525287).

The spelling of 531312152 in words is "five hundred thirty-one million, three hundred twelve thousand, one hundred fifty-two".