1311226761970 has 32 divisors (see below), whose sum is σ = 2441803806000. Its totient is φ = 506361440256.

The previous prime is 1311226761953. The next prime is 1311226761997. The reversal of 1311226761970 is 791676221131.

It can be written as a sum of positive squares in 8 ways, for example, as 1086862545729 + 224364216241 = 1042527^2 + 473671^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1311226761970.

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 15 ways as a sum of consecutive naturals, for example, 3306582 + ... + 3681838.

Almost surely, 2^{1311226761970} is an apocalyptic number.

1311226761970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1311226761970 is a deficient number, since it is larger than the sum of its proper divisors (1130577044030).

1311226761970 is a wasteful number, since it uses less digits than its factorization.

1311226761970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387342.

The product of its (nonzero) digits is 190512, while the sum is 46.

The spelling of 1311226761970 in words is "one trillion, three hundred eleven billion, two hundred twenty-six million, seven hundred sixty-one thousand, nine hundred seventy".