1313022111331 has 12 divisors (see below), whose sum is σ = 1527414584472. Its totient is φ = 1125431670048.

The previous prime is 1313022111307. The next prime is 1313022111343. The reversal of 1313022111331 is 1331112203131.

It is not a de Polignac number, because 1313022111331 - 2¹¹ = 1313022109283 is a prime.

It is a super-2 number, since 2×1313022111331² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1313022111301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4503516 + ... + 4786198.

It is an arithmetic number, because the mean of its divisors is an integer number (127284548706).

Almost surely, 2^{1313022111331} is an apocalyptic number.

1313022111331 is a deficient number, since it is larger than the sum of its proper divisors (214392473141).

1313022111331 is an equidigital number, since it uses as much as digits as its factorization.

1313022111331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377490 (or 377483 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 1313022111331 its reverse (1331112203131), we get a palindrome (2644134314462).

The spelling of 1313022111331 in words is "one trillion, three hundred thirteen billion, twenty-two million, one hundred eleven thousand, three hundred thirty-one".