531323240445 has 16 divisors (see below), whose sum is σ = 944574649920. Its totient is φ = 283372394832.

The previous prime is 531323240359. The next prime is 531323240491. The reversal of 531323240445 is 544042323135.

531323240445 is a `hidden beast` number, since 5 + 3 + 13 + 232 + 404 + 4 + 5 = 666.

It is not a de Polignac number, because 531323240445 - 2¹⁵ = 531323207677 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1967863719 + ... + 1967863988.

It is an arithmetic number, because the mean of its divisors is an integer number (59035915620).

Almost surely, 2^531323240445 is an apocalyptic number.

It is an amenable number.

531323240445 is a deficient number, since it is larger than the sum of its proper divisors (413251409475).

531323240445 is a wasteful number, since it uses less digits than its factorization.

531323240445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3935727721 (or 3935727715 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 36.

The spelling of 531323240445 in words is "five hundred thirty-one billion, three hundred twenty-three million, two hundred forty thousand, four hundred forty-five".