531742812 has 12 divisors (see below), whose sum is σ = 1240733256. Its totient is φ = 177247600.

The previous prime is 531742801. The next prime is 531742823. The reversal of 531742812 is 218247135.

It is an interprime number because it is at equal distance from previous prime (531742801) and next prime (531742823).

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×531742812² = 565500836227334688, 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 3 ways as a sum of consecutive naturals, for example, 22155939 + ... + 22155962.

It is an arithmetic number, because the mean of its divisors is an integer number (103394438).

Almost surely, 2^531742812 is an apocalyptic number.

It is an amenable number.

531742812 is an abundant number, since it is smaller than the sum of its proper divisors (708990444).

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

531742812 is a wasteful number, since it uses less digits than its factorization.

531742812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44311908 (or 44311906 counting only the distinct ones).

The product of its digits is 13440, while the sum is 33.

The square root of 531742812 is about 23059.5492583875. The cubic root of 531742812 is about 810.1533073636.

Adding to 531742812 its reverse (218247135), we get a palindrome (749989947).

The spelling of 531742812 in words is "five hundred thirty-one million, seven hundred forty-two thousand, eight hundred twelve".