531422531 has 4 divisors (see below), whose sum is σ = 531685200. Its totient is φ = 531159864.

The previous prime is 531422513. The next prime is 531422581. The reversal of 531422531 is 135224135.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 531422531 - 2²⁶ = 464313667 is a prime.

It is a super-2 number, since 2×531422531² = 564819812908891922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 531422531.

It is not an unprimeable number, because it can be changed into a prime (531422581) 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, 128276 + ... + 132353.

It is an arithmetic number, because the mean of its divisors is an integer number (132921300).

Almost surely, 2^531422531 is an apocalyptic number.

531422531 is a deficient number, since it is larger than the sum of its proper divisors (262669).

531422531 is a wasteful number, since it uses less digits than its factorization.

531422531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262668.

The product of its digits is 3600, while the sum is 26.

The square root of 531422531 is about 23052.6035622877. The cubic root of 531422531 is about 809.9906166672.

Adding to 531422531 its reverse (135224135), we get a palindrome (666646666).

The spelling of 531422531 in words is "five hundred thirty-one million, four hundred twenty-two thousand, five hundred thirty-one".