531338231522 has 90 divisors (see below), whose sum is σ = 949921328097. Its totient is φ = 222888858192.

The previous prime is 531338231509. The next prime is 531338231533. The reversal of 531338231522 is 225132833135.

It can be written as a sum of positive squares in 2 ways, for example, as 507529432921 + 23808798601 = 712411^2 + 154301^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=515431.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 3384319868 + ... + 3384320024.

Almost surely, 2^531338231522 is an apocalyptic number.

531338231522 is a deficient number, since it is larger than the sum of its proper divisors (418583096575).

531338231522 is an frugal number, since it uses more digits than its factorization.

531338231522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478 (or 233 counting only the distinct ones).

The product of its digits is 129600, while the sum is 38.

The spelling of 531338231522 in words is "five hundred thirty-one billion, three hundred thirty-eight million, two hundred thirty-one thousand, five hundred twenty-two".