1313023113321 has 16 divisors (see below), whose sum is σ = 1770482289600. Its totient is φ = 865457607168.

The previous prime is 1313023113317. The next prime is 1313023113323. The reversal of 1313023113321 is 1233113203131.

It is not a de Polignac number, because 1313023113321 - 2² = 1313023113317 is a prime.

It is a super-2 number, since 2×1313023113321² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1313023113291 and 1313023113300.

It is not an unprimeable number, because it can be changed into a prime (1313023113323) 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, 4220310 + ... + 4520736.

It is an arithmetic number, because the mean of its divisors is an integer number (110655143100).

Almost surely, 2^{1313023113321} is an apocalyptic number.

It is an amenable number.

1313023113321 is a deficient number, since it is larger than the sum of its proper divisors (457459176279).

1313023113321 is a wasteful number, since it uses less digits than its factorization.

1313023113321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316888.

The product of its (nonzero) digits is 972, while the sum is 24.

Adding to 1313023113321 its reverse (1233113203131), we get a palindrome (2546136316452).

The spelling of 1313023113321 in words is "one trillion, three hundred thirteen billion, twenty-three million, one hundred thirteen thousand, three hundred twenty-one".