1311143522 has 16 divisors (see below), whose sum is σ = 2119064640. Its totient is φ = 604839312.

The previous prime is 1311143501. The next prime is 1311143527. The reversal of 1311143522 is 2253411131.

It is not an unprimeable number, because it can be changed into a prime (1311143527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45083 + ... + 68225.

It is an arithmetic number, because the mean of its divisors is an integer number (132441540).

Almost surely, 2^1311143522 is an apocalyptic number.

1311143522 is a deficient number, since it is larger than the sum of its proper divisors (807921118).

1311143522 is a wasteful number, since it uses less digits than its factorization.

1311143522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25337.

The product of its digits is 720, while the sum is 23.

The square root of 1311143522 is about 36209.7158508597. The cubic root of 1311143522 is about 1094.5024662969.

Adding to 1311143522 its reverse (2253411131), we get a palindrome (3564554653).

The spelling of 1311143522 in words is "one billion, three hundred eleven million, one hundred forty-three thousand, five hundred twenty-two".