123540325321 has 24 divisors (see below), whose sum is σ = 147077346240. Its totient is φ = 103433514912.

The previous prime is 123540325319. The next prime is 123540325361. The reversal of 123540325321 is 123523045321.

It is not a de Polignac number, because 123540325321 - 2¹ = 123540325319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123540325361) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 317796 + ... + 589978.

It is an arithmetic number, because the mean of its divisors is an integer number (6128222760).

Almost surely, 2^123540325321 is an apocalyptic number.

It is an amenable number.

123540325321 is a deficient number, since it is larger than the sum of its proper divisors (23537020919).

123540325321 is a wasteful number, since it uses less digits than its factorization.

123540325321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272413 (or 272406 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 31.

The spelling of 123540325321 in words is "one hundred twenty-three billion, five hundred forty million, three hundred twenty-five thousand, three hundred twenty-one".