1331446133 has 2 divisors, whose sum is σ = 1331446134. Its totient is φ = 1331446132.

The previous prime is 1331446121. The next prime is 1331446163. The reversal of 1331446133 is 3316441331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 689482564 + 641963569 = 26258^2 + 25337^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1331446133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1331446096 and 1331446105.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1331446163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665723066 + 665723067.

It is an arithmetic number, because the mean of its divisors is an integer number (665723067).

Almost surely, 2^1331446133 is an apocalyptic number.

It is an amenable number.

1331446133 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331446133 is an equidigital number, since it uses as much as digits as its factorization.

1331446133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 29.

The square root of 1331446133 is about 36488.9864616709. The cubic root of 1331446133 is about 1100.1228879238.

Adding to 1331446133 its reverse (3316441331), we get a palindrome (4647887464).

The spelling of 1331446133 in words is "one billion, three hundred thirty-one million, four hundred forty-six thousand, one hundred thirty-three".