1331132306 has 16 divisors (see below), whose sum is σ = 2360629440. Its totient is φ = 550813200.

The previous prime is 1331132303. The next prime is 1331132333. The reversal of 1331132306 is 6032311331.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1331132303) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1638920 + ... + 1639731.

It is an arithmetic number, because the mean of its divisors is an integer number (147539340).

Almost surely, 2^1331132306 is an apocalyptic number.

1331132306 is a deficient number, since it is larger than the sum of its proper divisors (1029497134).

1331132306 is a wasteful number, since it uses less digits than its factorization.

1331132306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3278689.

The product of its (nonzero) digits is 972, while the sum is 23.

The square root of 1331132306 is about 36484.6859106667. The cubic root of 1331132306 is about 1100.0364467263.

Adding to 1331132306 its reverse (6032311331), we get a palindrome (7363443637).

The spelling of 1331132306 in words is "one billion, three hundred thirty-one million, one hundred thirty-two thousand, three hundred six".