1313322220031 has 4 divisors (see below), whose sum is σ = 1313338915200. Its totient is φ = 1313305524864.

The previous prime is 1313322220027. The next prime is 1313322220057. The reversal of 1313322220031 is 1300222233131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1313322220031 - 2² = 1313322220027 is a prime.

It is a super-2 number, since 2×1313322220031² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1313322219979 and 1313322220006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313322222031) 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 3 ways as a sum of consecutive naturals, for example, 8229026 + ... + 8387103.

It is an arithmetic number, because the mean of its divisors is an integer number (328334728800).

Almost surely, 2^{1313322220031} is an apocalyptic number.

1313322220031 is a deficient number, since it is larger than the sum of its proper divisors (16695169).

1313322220031 is an equidigital number, since it uses as much as digits as its factorization.

1313322220031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16695168.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 1313322220031 its reverse (1300222233131), we get a palindrome (2613544453162).

The spelling of 1313322220031 in words is "one trillion, three hundred thirteen billion, three hundred twenty-two million, two hundred twenty thousand, thirty-one".