1311423326402 has 32 divisors (see below), whose sum is σ = 2296817330688. Its totient is φ = 549881450496.

The previous prime is 1311423326383. The next prime is 1311423326407. The reversal of 1311423326402 is 2046233241131.

It is a super-2 number, since 2×1311423326402² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1311423326407) 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, 1468418 + ... + 2186114.

It is an arithmetic number, because the mean of its divisors is an integer number (71775541584).

Almost surely, 2^{1311423326402} is an apocalyptic number.

1311423326402 is a deficient number, since it is larger than the sum of its proper divisors (985394004286).

1311423326402 is a wasteful number, since it uses less digits than its factorization.

1311423326402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720530.

The product of its (nonzero) digits is 20736, while the sum is 32.

Adding to 1311423326402 its reverse (2046233241131), we get a palindrome (3357656567533).

The spelling of 1311423326402 in words is "one trillion, three hundred eleven billion, four hundred twenty-three million, three hundred twenty-six thousand, four hundred two".