531321145304 has 16 divisors (see below), whose sum is σ = 1028363507520. Its totient is φ = 257090876640.

The previous prime is 531321145283. The next prime is 531321145331. The reversal of 531321145304 is 403541123135.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1071211739 + ... + 1071212234.

It is an arithmetic number, because the mean of its divisors is an integer number (64272719220).

Almost surely, 2^531321145304 is an apocalyptic number.

It is an amenable number.

531321145304 is a deficient number, since it is larger than the sum of its proper divisors (497042362216).

531321145304 is a wasteful number, since it uses less digits than its factorization.

531321145304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2142424010 (or 2142424006 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 32.

Adding to 531321145304 its reverse (403541123135), we get a palindrome (934862268439).

The spelling of 531321145304 in words is "five hundred thirty-one billion, three hundred twenty-one million, one hundred forty-five thousand, three hundred four".