1311130640126 has 4 divisors (see below), whose sum is σ = 1966695960192. Its totient is φ = 655565320062.

The previous prime is 1311130640111. The next prime is 1311130640137. The reversal of 1311130640126 is 6210460311131.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327782660030 + ... + 327782660033.

It is an arithmetic number, because the mean of its divisors is an integer number (491673990048).

Almost surely, 2^{1311130640126} is an apocalyptic number.

1311130640126 is a deficient number, since it is larger than the sum of its proper divisors (655565320066).

1311130640126 is an equidigital number, since it uses as much as digits as its factorization.

1311130640126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655565320065.

The product of its (nonzero) digits is 2592, while the sum is 29.

Adding to 1311130640126 its reverse (6210460311131), we get a palindrome (7521590951257).

The spelling of 1311130640126 in words is "one trillion, three hundred eleven billion, one hundred thirty million, six hundred forty thousand, one hundred twenty-six".