531224131 has 2 divisors, whose sum is σ = 531224132. Its totient is φ = 531224130.

The previous prime is 531224081. The next prime is 531224137. The reversal of 531224131 is 131422135.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 531224131 - 2¹⁵ = 531191363 is a prime.

It is a super-2 number, since 2×531224131² = 564398154713410322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (531224137) 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 as a sum of consecutive naturals, namely, 265612065 + 265612066.

It is an arithmetic number, because the mean of its divisors is an integer number (265612066).

Almost surely, 2^531224131 is an apocalyptic number.

531224131 is a deficient number, since it is larger than the sum of its proper divisors (1).

531224131 is an equidigital number, since it uses as much as digits as its factorization.

531224131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 720, while the sum is 22.

The square root of 531224131 is about 23048.2999589991. The cubic root of 531224131 is about 809.8898041424.

Adding to 531224131 its reverse (131422135), we get a palindrome (662646266).

The spelling of 531224131 in words is "five hundred thirty-one million, two hundred twenty-four thousand, one hundred thirty-one".