1311225226 has 16 divisors (see below), whose sum is σ = 2090462400. Its totient is φ = 615074688.

The previous prime is 1311225217. The next prime is 1311225233. The reversal of 1311225226 is 6225221131.

It is a self number, because there is not a number n which added to its sum of digits gives 1311225226.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163591 + ... + 171418.

It is an arithmetic number, because the mean of its divisors is an integer number (130653900).

Almost surely, 2^1311225226 is an apocalyptic number.

1311225226 is a deficient number, since it is larger than the sum of its proper divisors (779237174).

1311225226 is a wasteful number, since it uses less digits than its factorization.

1311225226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335133.

The product of its digits is 1440, while the sum is 25.

The square root of 1311225226 is about 36210.8440387683. The cubic root of 1311225226 is about 1094.5252004905.

Adding to 1311225226 its reverse (6225221131), we get a palindrome (7536446357).

The spelling of 1311225226 in words is "one billion, three hundred eleven million, two hundred twenty-five thousand, two hundred twenty-six".