323404140031121 has 4 divisors (see below), whose sum is σ = 323675224810212. Its totient is φ = 323133055252032.

The previous prime is 323404140031043. The next prime is 323404140031129. The reversal of 323404140031121 is 121130041404323.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 190729772145025 + 132674367886096 = 13810495^2 + 11518436^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-323404140031121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (323404140031129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135542387756 + ... + 135542390141.

It is an arithmetic number, because the mean of its divisors is an integer number (80918806202553).

Almost surely, 2^{323404140031121} is an apocalyptic number.

It is an amenable number.

323404140031121 is a deficient number, since it is larger than the sum of its proper divisors (271084779091).

323404140031121 is a wasteful number, since it uses less digits than its factorization.

323404140031121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271084779090.

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 323404140031121 its reverse (121130041404323), we get a palindrome (444534181435444).

The spelling of 323404140031121 in words is "three hundred twenty-three trillion, four hundred four billion, one hundred forty million, thirty-one thousand, one hundred twenty-one".