531342513 has 24 divisors (see below), whose sum is σ = 840093800. Its totient is φ = 321615360.

The previous prime is 531342503. The next prime is 531342523. The reversal of 531342513 is 315243135.

It is an interprime number because it is at equal distance from previous prime (531342503) and next prime (531342523).

It can be written as a sum of positive squares in 4 ways, for example, as 71368704 + 459973809 = 8448^2 + 21447^2 .

It is not a de Polignac number, because 531342513 - 2¹⁷ = 531211441 is a prime.

It is a super-2 number, since 2×531342513² = 564649732242310338, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (531342503) 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 23 ways as a sum of consecutive naturals, for example, 30088 + ... + 44361.

Almost surely, 2^531342513 is an apocalyptic number.

It is an amenable number.

531342513 is a deficient number, since it is larger than the sum of its proper divisors (308751287).

531342513 is a wasteful number, since it uses less digits than its factorization.

531342513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74529 (or 74526 counting only the distinct ones).

The product of its digits is 5400, while the sum is 27.

The square root of 531342513 is about 23050.8679446133. The cubic root of 531342513 is about 809.9499603290.

Adding to 531342513 its reverse (315243135), we get a palindrome (846585648).

The spelling of 531342513 in words is "five hundred thirty-one million, three hundred forty-two thousand, five hundred thirteen".