1331103123 has 12 divisors (see below), whose sum is σ = 2197376688. Its totient is φ = 760630320.

The previous prime is 1331103119. The next prime is 1331103133. The reversal of 1331103123 is 3213011331.

It is a happy number.

It is not a de Polignac number, because 1331103123 - 2² = 1331103119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1331103096 and 1331103105.

It is not an unprimeable number, because it can be changed into a prime (1331103113) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10564248 + ... + 10564373.

It is an arithmetic number, because the mean of its divisors is an integer number (183114724).

Almost surely, 2^1331103123 is an apocalyptic number.

1331103123 is a deficient number, since it is larger than the sum of its proper divisors (866273565).

1331103123 is a wasteful number, since it uses less digits than its factorization.

1331103123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21128634 (or 21128631 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

The square root of 1331103123 is about 36484.2859735531. The cubic root of 1331103123 is about 1100.0284078063.

Adding to 1331103123 its reverse (3213011331), we get a palindrome (4544114454).

The spelling of 1331103123 in words is "one billion, three hundred thirty-one million, one hundred three thousand, one hundred twenty-three".