531318941 has 4 divisors (see below), whose sum is σ = 532224672. Its totient is φ = 530413212.

The previous prime is 531318937. The next prime is 531318989. The reversal of 531318941 is 149813135.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 149813135 = 5 ⋅29962627.

It is a cyclic number.

It is not a de Polignac number, because 531318941 - 2² = 531318937 is a prime.

It is a super-2 number, since 2×531318941² = 564599634130722962, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531318041) 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 3 ways as a sum of consecutive naturals, for example, 451985 + ... + 453158.

It is an arithmetic number, because the mean of its divisors is an integer number (133056168).

Almost surely, 2^531318941 is an apocalyptic number.

It is an amenable number.

531318941 is a deficient number, since it is larger than the sum of its proper divisors (905731).

531318941 is an equidigital number, since it uses as much as digits as its factorization.

531318941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905730.

The product of its digits is 12960, while the sum is 35.

The square root of 531318941 is about 23050.3566349851. The cubic root of 531318941 is about 809.9379828553.

The spelling of 531318941 in words is "five hundred thirty-one million, three hundred eighteen thousand, nine hundred forty-one".