1311154656226 has 4 divisors (see below), whose sum is σ = 1966731984342. Its totient is φ = 655577328112.

The previous prime is 1311154656193. The next prime is 1311154656367. The reversal of 1311154656226 is 6226564511131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1157455374201 + 153699282025 = 1075851^2 + 392045^2 .

It is a super-3 number, since 3×1311154656226³ (a number of 37 digits) contains 333 as substring.

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 as a sum of consecutive naturals, namely, 327788664055 + ... + 327788664058.

Almost surely, 2^{1311154656226} is an apocalyptic number.

1311154656226 is a deficient number, since it is larger than the sum of its proper divisors (655577328116).

1311154656226 is an equidigital number, since it uses as much as digits as its factorization.

1311154656226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655577328115.

The product of its digits is 259200, while the sum is 43.

The spelling of 1311154656226 in words is "one trillion, three hundred eleven billion, one hundred fifty-four million, six hundred fifty-six thousand, two hundred twenty-six".