1313605223131 has 2 divisors, whose sum is σ = 1313605223132. Its totient is φ = 1313605223130.

The previous prime is 1313605223089. The next prime is 1313605223213. The reversal of 1313605223131 is 1313225063131.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1313605223131 - 2²¹ = 1313603125979 is a prime.

It is a super-2 number, since 2×1313605223131² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1313605223093 and 1313605223102.

It is not a weakly prime, because it can be changed into another prime (1313605223831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656802611565 + 656802611566.

It is an arithmetic number, because the mean of its divisors is an integer number (656802611566).

Almost surely, 2^{1313605223131} is an apocalyptic number.

1313605223131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313605223131 is an equidigital number, since it uses as much as digits as its factorization.

1313605223131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 31.

The spelling of 1313605223131 in words is "one trillion, three hundred thirteen billion, six hundred five million, two hundred twenty-three thousand, one hundred thirty-one".