1226431356 has 24 divisors (see below), whose sum is σ = 2863486080. Its totient is φ = 408551472.

The previous prime is 1226431309. The next prime is 1226431363. The reversal of 1226431356 is 6531346221.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12136 + ... + 50991.

It is an arithmetic number, because the mean of its divisors is an integer number (119311920).

Almost surely, 2^1226431356 is an apocalyptic number.

It is an amenable number.

1226431356 is an abundant number, since it is smaller than the sum of its proper divisors (1637054724).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1226431356 is a wasteful number, since it uses less digits than its factorization.

1226431356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64753 (or 64751 counting only the distinct ones).

The product of its digits is 25920, while the sum is 33.

The square root of 1226431356 is about 35020.4419732247. The cubic root of 1226431356 is about 1070.4040620286.

Adding to 1226431356 its reverse (6531346221), we get a palindrome (7757777577).

The spelling of 1226431356 in words is "one billion, two hundred twenty-six million, four hundred thirty-one thousand, three hundred fifty-six".