1231301310321 has 8 divisors (see below), whose sum is σ = 1641785677344. Its totient is φ = 820842241760.

The previous prime is 1231301310251. The next prime is 1231301310353. The reversal of 1231301310321 is 1230131031321.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1231301310321 - 2²⁵ = 1231267755889 is a prime.

It is a super-2 number, since 2×1231301310321² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1231301310121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6210756 + ... + 6405941.

It is an arithmetic number, because the mean of its divisors is an integer number (205223209668).

Almost surely, 2^{1231301310321} is an apocalyptic number.

It is an amenable number.

1231301310321 is a deficient number, since it is larger than the sum of its proper divisors (410484367023).

1231301310321 is a wasteful number, since it uses less digits than its factorization.

1231301310321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12649231.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 1231301310321 its reverse (1230131031321), we get a palindrome (2461432341642).

The spelling of 1231301310321 in words is "one trillion, two hundred thirty-one billion, three hundred one million, three hundred ten thousand, three hundred twenty-one".