1313013021123 has 16 divisors (see below), whose sum is σ = 1762786368000. Its totient is φ = 869293196640.

The previous prime is 1313013021119. The next prime is 1313013021167. The reversal of 1313013021123 is 3211203103131.

It is a happy number.

It is not a de Polignac number, because 1313013021123 - 2² = 1313013021119 is a prime.

It is a super-2 number, since 2×1313013021123² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1313013021123.

It is not an unprimeable number, because it can be changed into a prime (1313013021113) 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, 1960968 + ... + 2543898.

It is an arithmetic number, because the mean of its divisors is an integer number (110174148000).

Almost surely, 2^{1313013021123} is an apocalyptic number.

1313013021123 is a deficient number, since it is larger than the sum of its proper divisors (449773346877).

1313013021123 is a wasteful number, since it uses less digits than its factorization.

1313013021123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588122.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 1313013021123 its reverse (3211203103131), we get a palindrome (4524216124254).

The spelling of 1313013021123 in words is "one trillion, three hundred thirteen billion, thirteen million, twenty-one thousand, one hundred twenty-three".