1320311302231 has 16 divisors (see below), whose sum is σ = 1380444825600. Its totient is φ = 1261171296000.

The previous prime is 1320311302201. The next prime is 1320311302237. The reversal of 1320311302231 is 1322031130231.

It is a cyclic number.

It is not a de Polignac number, because 1320311302231 - 2²¹ = 1320309205079 is a prime.

It is a super-2 number, since 2×1320311302231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320311302237) 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, 3569971 + ... + 3922411.

It is an arithmetic number, because the mean of its divisors is an integer number (86277801600).

Almost surely, 2^{1320311302231} is an apocalyptic number.

1320311302231 is a deficient number, since it is larger than the sum of its proper divisors (60133523369).

1320311302231 is a wasteful number, since it uses less digits than its factorization.

1320311302231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353850.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1320311302231 its reverse (1322031130231), we get a palindrome (2642342432462).

The spelling of 1320311302231 in words is "one trillion, three hundred twenty billion, three hundred eleven million, three hundred two thousand, two hundred thirty-one".