1331322123 has 16 divisors (see below), whose sum is σ = 1836208640. Its totient is φ = 857337696.

The previous prime is 1331322121. The next prime is 1331322131. The reversal of 1331322123 is 3212231331.

It is not a de Polignac number, because 1331322123 - 2¹ = 1331322121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1331322123.

It is not an unprimeable number, because it can be changed into a prime (1331322121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27715 + ... + 58572.

It is an arithmetic number, because the mean of its divisors is an integer number (114763040).

Almost surely, 2^1331322123 is an apocalyptic number.

1331322123 is a deficient number, since it is larger than the sum of its proper divisors (504886517).

1331322123 is a wasteful number, since it uses less digits than its factorization.

1331322123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86466.

The product of its digits is 648, while the sum is 21.

The square root of 1331322123 is about 36487.2871422363. The cubic root of 1331322123 is about 1100.0887319607.

Adding to 1331322123 its reverse (3212231331), we get a palindrome (4543553454).

The spelling of 1331322123 in words is "one billion, three hundred thirty-one million, three hundred twenty-two thousand, one hundred twenty-three".