1311230610522 has 48 divisors (see below), whose sum is σ = 3389575734720. Its totient is φ = 374637316536.

The previous prime is 1311230610493. The next prime is 1311230610539. The reversal of 1311230610522 is 2250160321131.

1311230610522 is a `hidden beast` number, since 1 + 3 + 1 + 1 + 23 + 0 + 610 + 5 + 22 = 666.

It is a super-2 number, since 2×1311230610522² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 247773358 + ... + 247778649.

It is an arithmetic number, because the mean of its divisors is an integer number (70616161140).

Almost surely, 2^{1311230610522} is an apocalyptic number.

1311230610522 is an abundant number, since it is smaller than the sum of its proper divisors (2078345124198).

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

1311230610522 is a wasteful number, since it uses less digits than its factorization.

1311230610522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495552032 (or 495552019 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

Adding to 1311230610522 its reverse (2250160321131), we get a palindrome (3561390931653).

The spelling of 1311230610522 in words is "one trillion, three hundred eleven billion, two hundred thirty million, six hundred ten thousand, five hundred twenty-two".