1313223213031 has 2 divisors, whose sum is σ = 1313223213032. Its totient is φ = 1313223213030.

The previous prime is 1313223213023. The next prime is 1313223213073. The reversal of 1313223213031 is 1303123223131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1313223213031 - 2³ = 1313223213023 is a prime.

It is a super-2 number, since 2×1313223213031² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1313223212987 and 1313223213005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1313223213091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656611606515 + 656611606516.

It is an arithmetic number, because the mean of its divisors is an integer number (656611606516).

Almost surely, 2^{1313223213031} is an apocalyptic number.

1313223213031 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313223213031 is an equidigital number, since it uses as much as digits as its factorization.

1313223213031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 1313223213031 its reverse (1303123223131), we get a palindrome (2616346436162).

The spelling of 1313223213031 in words is "one trillion, three hundred thirteen billion, two hundred twenty-three million, two hundred thirteen thousand, thirty-one".