1311233212104 has 16 divisors (see below), whose sum is σ = 3278083030320. Its totient is φ = 437077737360.

The previous prime is 1311233212097. The next prime is 1311233212109. The reversal of 1311233212104 is 4012123321131.

It is a super-3 number, since 3×1311233212104³ (a number of 37 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 54634717171 = 1311233212104 / (1 + 3 + 1 + 1 + 2 + 3 + 3 + 2 + 1 + 2 + 1 + 0 + 4).

It is not an unprimeable number, because it can be changed into a prime (1311233212109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27317358562 + ... + 27317358609.

It is an arithmetic number, because the mean of its divisors is an integer number (204880189395).

Almost surely, 2^{1311233212104} is an apocalyptic number.

It is an amenable number.

1311233212104 is an abundant number, since it is smaller than the sum of its proper divisors (1966849818216).

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

1311233212104 is a wasteful number, since it uses less digits than its factorization.

1311233212104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54634717180 (or 54634717176 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 1311233212104 its reverse (4012123321131), we get a palindrome (5323356533235).

The spelling of 1311233212104 in words is "one trillion, three hundred eleven billion, two hundred thirty-three million, two hundred twelve thousand, one hundred four".