1311440542252 has 12 divisors (see below), whose sum is σ = 2295746554696. Its totient is φ = 655512955200.

The previous prime is 1311440542231. The next prime is 1311440542277. The reversal of 1311440542252 is 2522450441131.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51814749 + ... + 51840052.

Almost surely, 2^{1311440542252} is an apocalyptic number.

It is an amenable number.

1311440542252 is a deficient number, since it is larger than the sum of its proper divisors (984306012444).

1311440542252 is a wasteful number, since it uses less digits than its factorization.

1311440542252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103657968 (or 103657966 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 34.

Adding to 1311440542252 its reverse (2522450441131), we get a palindrome (3833890983383).

The spelling of 1311440542252 in words is "one trillion, three hundred eleven billion, four hundred forty million, five hundred forty-two thousand, two hundred fifty-two".