1226361131 has 2 divisors, whose sum is σ = 1226361132. Its totient is φ = 1226361130.

The previous prime is 1226361119. The next prime is 1226361139. The reversal of 1226361131 is 1311636221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1226361131 - 2¹⁴ = 1226344747 is a prime.

It is a super-2 number, since 2×1226361131² = 3007923247255198322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1226361131.

It is not a weakly prime, because it can be changed into another prime (1226361139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 613180565 + 613180566.

It is an arithmetic number, because the mean of its divisors is an integer number (613180566).

Almost surely, 2^1226361131 is an apocalyptic number.

1226361131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1226361131 is an equidigital number, since it uses as much as digits as its factorization.

1226361131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 26.

The square root of 1226361131 is about 35019.4393301777. The cubic root of 1226361131 is about 1070.3836313268.

Adding to 1226361131 its reverse (1311636221), we get a palindrome (2537997352).

The spelling of 1226361131 in words is "one billion, two hundred twenty-six million, three hundred sixty-one thousand, one hundred thirty-one".