123540311336 has 32 divisors (see below), whose sum is σ = 252873624360. Its totient is φ = 56237524992.

The previous prime is 123540311327. The next prime is 123540311341. The reversal of 123540311336 is 633113045321.

It can be written as a sum of positive squares in 4 ways, for example, as 72873002500 + 50667308836 = 269950^2 + 225094^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8128625 + ... + 8143808.

Almost surely, 2^123540311336 is an apocalyptic number.

It is an amenable number.

123540311336 is an abundant number, since it is smaller than the sum of its proper divisors (129333313024).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123540311336 is a wasteful number, since it uses less digits than its factorization.

123540311336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16272525 (or 16272521 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 32.

Adding to 123540311336 its reverse (633113045321), we get a palindrome (756653356657).

The spelling of 123540311336 in words is "one hundred twenty-three billion, five hundred forty million, three hundred eleven thousand, three hundred thirty-six".