1311231100066 has 8 divisors (see below), whose sum is σ = 1974325155264. Its totient is φ = 653122714980.

The previous prime is 1311231099967. The next prime is 1311231100103. The reversal of 1311231100066 is 6600011321131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1311231100066.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1246416870 + ... + 1246417921.

It is an arithmetic number, because the mean of its divisors is an integer number (246790644408).

Almost surely, 2^{1311231100066} is an apocalyptic number.

1311231100066 is a deficient number, since it is larger than the sum of its proper divisors (663094055198).

1311231100066 is a wasteful number, since it uses less digits than its factorization.

1311231100066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2492835056.

The product of its (nonzero) digits is 648, while the sum is 25.

Adding to 1311231100066 its reverse (6600011321131), we get a palindrome (7911242421197).

The spelling of 1311231100066 in words is "one trillion, three hundred eleven billion, two hundred thirty-one million, one hundred thousand, sixty-six".