1311231223108 has 12 divisors (see below), whose sum is σ = 2294680268412. Its totient is φ = 655608289280.

The previous prime is 1311231223087. The next prime is 1311231223139. The reversal of 1311231223108 is 8013221321131.

It can be written as a sum of positive squares in 2 ways, for example, as 1014737904964 + 296493318144 = 1007342^2 + 544512^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1417285 + ... + 2152012.

It is an arithmetic number, because the mean of its divisors is an integer number (191223355701).

Almost surely, 2^{1311231223108} is an apocalyptic number.

It is an amenable number.

1311231223108 is a deficient number, since it is larger than the sum of its proper divisors (983449045304).

1311231223108 is a wasteful number, since it uses less digits than its factorization.

1311231223108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3661142 (or 3661140 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

Adding to 1311231223108 its reverse (8013221321131), we get a palindrome (9324452544239).

The spelling of 1311231223108 in words is "one trillion, three hundred eleven billion, two hundred thirty-one million, two hundred twenty-three thousand, one hundred eight".