1331022241 has 4 divisors (see below), whose sum is σ = 1353582000. Its totient is φ = 1308462484.

The previous prime is 1331022229. The next prime is 1331022247. The reversal of 1331022241 is 1422201331.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1331022241 - 2¹⁷ = 1330891169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1331022247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11279791 + ... + 11279908.

It is an arithmetic number, because the mean of its divisors is an integer number (338395500).

Almost surely, 2^1331022241 is an apocalyptic number.

It is an amenable number.

1331022241 is a deficient number, since it is larger than the sum of its proper divisors (22559759).

1331022241 is an equidigital number, since it uses as much as digits as its factorization.

1331022241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22559758.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1331022241 is about 36483.1775069004. The cubic root of 1331022241 is about 1100.0061269631.

Adding to 1331022241 its reverse (1422201331), we get a palindrome (2753223572).

The spelling of 1331022241 in words is "one billion, three hundred thirty-one million, twenty-two thousand, two hundred forty-one".