123431330522 has 8 divisors (see below), whose sum is σ = 190150968756. Its totient is φ = 60047674272.

The previous prime is 123431330497. The next prime is 123431330549. The reversal of 123431330522 is 225033134321.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 114413739001 + 9017591521 = 338251^2 + 94961^2 .

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, 833995403 + ... + 833995550.

Almost surely, 2^123431330522 is an apocalyptic number.

123431330522 is a deficient number, since it is larger than the sum of its proper divisors (66719638234).

123431330522 is a wasteful number, since it uses less digits than its factorization.

123431330522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1667990992.

The product of its (nonzero) digits is 12960, while the sum is 29.

Adding to 123431330522 its reverse (225033134321), we get a palindrome (348464464843).

The spelling of 123431330522 in words is "one hundred twenty-three billion, four hundred thirty-one million, three hundred thirty thousand, five hundred twenty-two".