1311264362123 has 16 divisors (see below), whose sum is σ = 1380045254400. Its totient is φ = 1244072313120.

The previous prime is 1311264362119. The next prime is 1311264362131. The reversal of 1311264362123 is 3212634621131.

It is not a de Polignac number, because 1311264362123 - 2² = 1311264362119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1311264362173) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3987608 + ... + 4303898.

It is an arithmetic number, because the mean of its divisors is an integer number (86252828400).

Almost surely, 2^{1311264362123} is an apocalyptic number.

1311264362123 is a deficient number, since it is larger than the sum of its proper divisors (68780892277).

1311264362123 is a wasteful number, since it uses less digits than its factorization.

1311264362123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318802.

The product of its digits is 31104, while the sum is 35.

Adding to 1311264362123 its reverse (3212634621131), we get a palindrome (4523898983254).

The spelling of 1311264362123 in words is "one trillion, three hundred eleven billion, two hundred sixty-four million, three hundred sixty-two thousand, one hundred twenty-three".