1311253613433 has 24 divisors (see below), whose sum is σ = 1996757363328. Its totient is φ = 827541487872.

The previous prime is 1311253613431. The next prime is 1311253613441. The reversal of 1311253613433 is 3343163521131.

It is a happy number.

1311253613433 is a `hidden beast` number, since 1 + 3 + 1 + 1 + 2 + 5 + 3 + 613 + 4 + 33 = 666.

It is not a de Polignac number, because 1311253613433 - 2¹ = 1311253613431 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1311253613431) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32632285 + ... + 32672442.

It is an arithmetic number, because the mean of its divisors is an integer number (83198223472).

Almost surely, 2^{1311253613433} is an apocalyptic number.

It is an amenable number.

1311253613433 is a deficient number, since it is larger than the sum of its proper divisors (685503749895).

1311253613433 is a wasteful number, since it uses less digits than its factorization.

1311253613433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65304853 (or 65304850 counting only the distinct ones).

The product of its digits is 58320, while the sum is 36.

The spelling of 1311253613433 in words is "one trillion, three hundred eleven billion, two hundred fifty-three million, six hundred thirteen thousand, four hundred thirty-three".