1323122213231 has 16 divisors (see below), whose sum is σ = 1628528193600. Its totient is φ = 1046820872448.

The previous prime is 1323122213221. The next prime is 1323122213239.

1323122213231 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1323122213231 - 2¹⁸ = 1323121951087 is a prime.

It is a super-2 number, since 2×1323122213231² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1323122213231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323122213239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1898585 + ... + 2500173.

It is an arithmetic number, because the mean of its divisors is an integer number (101783012100).

Almost surely, 2^{1323122213231} is an apocalyptic number.

1323122213231 is a deficient number, since it is larger than the sum of its proper divisors (305405980369).

1323122213231 is a wasteful number, since it uses less digits than its factorization.

1323122213231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625778.

The product of its digits is 2592, while the sum is 26.

The spelling of 1323122213231 in words is "one trillion, three hundred twenty-three billion, one hundred twenty-two million, two hundred thirteen thousand, two hundred thirty-one".