1311125261435 has 16 divisors (see below), whose sum is σ = 1716404536800. Its totient is φ = 953533213440.

The previous prime is 1311125261431. The next prime is 1311125261483. The reversal of 1311125261435 is 5341625211131.

It is a happy number.

It is not a de Polignac number, because 1311125261435 - 2² = 1311125261431 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1311125261395 and 1311125261404.

It is not an unprimeable number, because it can be changed into a prime (1311125261431) 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, 7495229 + ... + 7668161.

It is an arithmetic number, because the mean of its divisors is an integer number (107275283550).

Almost surely, 2^{1311125261435} is an apocalyptic number.

1311125261435 is a deficient number, since it is larger than the sum of its proper divisors (405279275365).

1311125261435 is a wasteful number, since it uses less digits than its factorization.

1311125261435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310798.

The product of its digits is 21600, while the sum is 35.

The spelling of 1311125261435 in words is "one trillion, three hundred eleven billion, one hundred twenty-five million, two hundred sixty-one thousand, four hundred thirty-five".