1311252162404 has 6 divisors (see below), whose sum is σ = 2294691284214. Its totient is φ = 655626081200.

The previous prime is 1311252162401. The next prime is 1311252162439. The reversal of 1311252162404 is 4042612521131.

It can be written as a sum of positive squares in only one way, i.e., 1237945516900 + 73306645504 = 1112630^2 + 270752^2 .

It is not an unprimeable number, because it can be changed into a prime (1311252162401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163906520297 + ... + 163906520304.

It is an arithmetic number, because the mean of its divisors is an integer number (382448547369).

Almost surely, 2^{1311252162404} is an apocalyptic number.

It is an amenable number.

1311252162404 is a deficient number, since it is larger than the sum of its proper divisors (983439121810).

1311252162404 is a wasteful number, since it uses less digits than its factorization.

1311252162404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327813040605 (or 327813040603 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

Adding to 1311252162404 its reverse (4042612521131), we get a palindrome (5353864683535).

The spelling of 1311252162404 in words is "one trillion, three hundred eleven billion, two hundred fifty-two million, one hundred sixty-two thousand, four hundred four".