1311641213512 has 16 divisors (see below), whose sum is σ = 2810659743360. Its totient is φ = 562131948624.

The previous prime is 1311641213489. The next prime is 1311641213537. The reversal of 1311641213512 is 2153121461131.

It is a happy number.

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, 11711082208 + ... + 11711082319.

It is an arithmetic number, because the mean of its divisors is an integer number (175666233960).

Almost surely, 2^{1311641213512} is an apocalyptic number.

It is an amenable number.

1311641213512 is an abundant number, since it is smaller than the sum of its proper divisors (1499018529848).

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

1311641213512 is a wasteful number, since it uses less digits than its factorization.

1311641213512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23422164540 (or 23422164536 counting only the distinct ones).

The product of its digits is 4320, while the sum is 31.

Adding to 1311641213512 its reverse (2153121461131), we get a palindrome (3464762674643).

The spelling of 1311641213512 in words is "one trillion, three hundred eleven billion, six hundred forty-one million, two hundred thirteen thousand, five hundred twelve".