1311233222402 has 8 divisors (see below), whose sum is σ = 1967402796156. Its totient is φ = 655432290352.

The previous prime is 1311233222399. The next prime is 1311233222407. The reversal of 1311233222402 is 2042223321131.

It can be written as a sum of positive squares in 2 ways, for example, as 1131668312401 + 179564910001 = 1063799^2 + 423751^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×1311233222402³ (a number of 37 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1311233222407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92151533 + ... + 92165760.

Almost surely, 2^{1311233222402} is an apocalyptic number.

1311233222402 is a deficient number, since it is larger than the sum of its proper divisors (656169573754).

1311233222402 is a wasteful number, since it uses less digits than its factorization.

1311233222402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184320852.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 1311233222402 its reverse (2042223321131), we get a palindrome (3353456543533).

The spelling of 1311233222402 in words is "one trillion, three hundred eleven billion, two hundred thirty-three million, two hundred twenty-two thousand, four hundred two".