1311451341231 has 32 divisors (see below), whose sum is σ = 1877025346560. Its totient is φ = 811533026304.

The previous prime is 1311451341203. The next prime is 1311451341241. The reversal of 1311451341231 is 1321431541131.

It is a happy number.

It is not a de Polignac number, because 1311451341231 - 2¹⁰ = 1311451340207 is a prime.

It is a super-2 number, since 2×1311451341231² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311451341241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3373291 + ... + 3741923.

It is an arithmetic number, because the mean of its divisors is an integer number (58657042080).

Almost surely, 2^{1311451341231} is an apocalyptic number.

1311451341231 is a deficient number, since it is larger than the sum of its proper divisors (565574005329).

1311451341231 is a wasteful number, since it uses less digits than its factorization.

1311451341231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369615.

The product of its digits is 4320, while the sum is 30.

Adding to 1311451341231 its reverse (1321431541131), we get a palindrome (2632882882362).

The spelling of 1311451341231 in words is "one trillion, three hundred eleven billion, four hundred fifty-one million, three hundred forty-one thousand, two hundred thirty-one".