1331228206 has 48 divisors (see below), whose sum is σ = 2518373088. Its totient is φ = 516605760.

The previous prime is 1331228183. The next prime is 1331228207. The reversal of 1331228206 is 6028221331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331228207) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 467820 + ... + 470656.

It is an arithmetic number, because the mean of its divisors is an integer number (52466106).

Almost surely, 2^1331228206 is an apocalyptic number.

1331228206 is a deficient number, since it is larger than the sum of its proper divisors (1187144882).

1331228206 is a wasteful number, since it uses less digits than its factorization.

1331228206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3145 (or 3134 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 1331228206 is about 36486.0001370389. Note that the first 3 decimals coincide. The cubic root of 1331228206 is about 1100.0628630741.

Adding to 1331228206 its reverse (6028221331), we get a palindrome (7359449537).

The spelling of 1331228206 in words is "one billion, three hundred thirty-one million, two hundred twenty-eight thousand, two hundred six".