531243512402 has 8 divisors (see below), whose sum is σ = 798388913136. Its totient is φ = 265113874692.

The previous prime is 531243512363. The next prime is 531243512413. The reversal of 531243512402 is 204215342135.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 253939448 + ... + 253941539.

It is an arithmetic number, because the mean of its divisors is an integer number (99798614142).

Almost surely, 2^531243512402 is an apocalyptic number.

531243512402 is a deficient number, since it is larger than the sum of its proper divisors (267145400734).

531243512402 is a wasteful number, since it uses less digits than its factorization.

531243512402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507881512.

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 531243512402 its reverse (204215342135), we get a palindrome (735458854537).

The spelling of 531243512402 in words is "five hundred thirty-one billion, two hundred forty-three million, five hundred twelve thousand, four hundred two".