1331113123 has 16 divisors (see below), whose sum is σ = 1393976320. Its totient is φ = 1269626400.

The previous prime is 1331113051. The next prime is 1331113159. The reversal of 1331113123 is 3213111331.

It is a cyclic number.

It is not a de Polignac number, because 1331113123 - 2⁹ = 1331112611 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 1331113123.

It is not an unprimeable number, because it can be changed into a prime (1331116123) 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, 712036 + ... + 713902.

It is an arithmetic number, because the mean of its divisors is an integer number (87123520).

Almost surely, 2^1331113123 is an apocalyptic number.

1331113123 is a deficient number, since it is larger than the sum of its proper divisors (62863197).

1331113123 is a wasteful number, since it uses less digits than its factorization.

1331113123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2218.

The product of its digits is 162, while the sum is 19.

The square root of 1331113123 is about 36484.4230185980. The cubic root of 1331113123 is about 1100.0311624781.

Adding to 1331113123 its reverse (3213111331), we get a palindrome (4544224454).

The spelling of 1331113123 in words is "one billion, three hundred thirty-one million, one hundred thirteen thousand, one hundred twenty-three".