531242611 has 4 divisors (see below), whose sum is σ = 533939472. Its totient is φ = 528545752.

The previous prime is 531242609. The next prime is 531242623. The reversal of 531242611 is 116242135.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 116242135 = 5 ⋅23248427.

It is a cyclic number.

It is not a de Polignac number, because 531242611 - 2¹ = 531242609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (531242671) 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, 1348135 + ... + 1348528.

It is an arithmetic number, because the mean of its divisors is an integer number (133484868).

Almost surely, 2^531242611 is an apocalyptic number.

531242611 is a deficient number, since it is larger than the sum of its proper divisors (2696861).

531242611 is a wasteful number, since it uses less digits than its factorization.

531242611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2696860.

The product of its digits is 1440, while the sum is 25.

The square root of 531242611 is about 23048.7008527596. The cubic root of 531242611 is about 809.8991954013.

Adding to 531242611 its reverse (116242135), we get a palindrome (647484746).

The spelling of 531242611 in words is "five hundred thirty-one million, two hundred forty-two thousand, six hundred eleven".