1331223535 has 16 divisors (see below), whose sum is σ = 1633986432. Its totient is φ = 1040704000.

The previous prime is 1331223503. The next prime is 1331223559. The reversal of 1331223535 is 5353221331.

It is not a de Polignac number, because 1331223535 - 2⁵ = 1331223503 is a prime.

It is a super-2 number, since 2×1331223535² = 3544312200275792450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160695 + ... + 168775.

It is an arithmetic number, because the mean of its divisors is an integer number (102124152).

Almost surely, 2^1331223535 is an apocalyptic number.

1331223535 is a deficient number, since it is larger than the sum of its proper divisors (302762897).

1331223535 is an equidigital number, since it uses as much as digits as its factorization.

1331223535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8834.

The product of its digits is 8100, while the sum is 28.

The square root of 1331223535 is about 36485.9361261295. The cubic root of 1331223535 is about 1100.0615764428.

Adding to 1331223535 its reverse (5353221331), we get a palindrome (6684444866).

The spelling of 1331223535 in words is "one billion, three hundred thirty-one million, two hundred twenty-three thousand, five hundred thirty-five".