1231326231321 has 32 divisors (see below), whose sum is σ = 1693886732928. Its totient is φ = 795030888960.

The previous prime is 1231326231319. The next prime is 1231326231347.

1231326231321 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1231326231321 - 2¹ = 1231326231319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1231326231721) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 135439986 + ... + 135449076.

It is an arithmetic number, because the mean of its divisors is an integer number (52933960404).

Almost surely, 2^{1231326231321} is an apocalyptic number.

It is an amenable number.

1231326231321 is a deficient number, since it is larger than the sum of its proper divisors (462560501607).

1231326231321 is a wasteful number, since it uses less digits than its factorization.

1231326231321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14601.

The product of its digits is 7776, while the sum is 30.

The spelling of 1231326231321 in words is "one trillion, two hundred thirty-one billion, three hundred twenty-six million, two hundred thirty-one thousand, three hundred twenty-one".