1311011442 has 24 divisors (see below), whose sum is σ = 3059027244. Its totient is φ = 403388064.

The previous prime is 1311011437. The next prime is 1311011479. The reversal of 1311011442 is 2441101131.

It can be written as a sum of positive squares in 2 ways, for example, as 1307473281 + 3538161 = 36159^2 + 1881^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2801073 + ... + 2801540.

Almost surely, 2^1311011442 is an apocalyptic number.

1311011442 is an abundant number, since it is smaller than the sum of its proper divisors (1748015802).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1311011442 is a wasteful number, since it uses less digits than its factorization.

1311011442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5602634 (or 5602631 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 1311011442 is about 36207.8919850355. The cubic root of 1311011442 is about 1094.4657129495.

Adding to 1311011442 its reverse (2441101131), we get a palindrome (3752112573).

The spelling of 1311011442 in words is "one billion, three hundred eleven million, eleven thousand, four hundred forty-two".