531323215435404 has 72 divisors (see below), whose sum is σ = 1534936172104608. Its totient is φ = 151806391799040.

The previous prime is 531323215435403. The next prime is 531323215435409. The reversal of 531323215435404 is 404534512323135.

531323215435404 is a `hidden beast` number, since 5 + 3 + 1 + 3 + 23 + 215 + 4 + 3 + 5 + 404 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 531323215435404.

It is not an unprimeable number, because it can be changed into a prime (531323215435403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 210459714 + ... + 212969334.

Almost surely, 2^{531323215435404} is an apocalyptic number.

It is an amenable number.

531323215435404 is an abundant number, since it is smaller than the sum of its proper divisors (1003612956669204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

531323215435404 is a wasteful number, since it uses less digits than its factorization.

531323215435404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3349775 (or 3349770 counting only the distinct ones).

The product of its (nonzero) digits is 2592000, while the sum is 45.

Adding to 531323215435404 its reverse (404534512323135), we get a palindrome (935857727758539).

The spelling of 531323215435404 in words is "five hundred thirty-one trillion, three hundred twenty-three billion, two hundred fifteen million, four hundred thirty-five thousand, four hundred four".