1011323103 has 24 divisors (see below), whose sum is σ = 1569807360. Its totient is φ = 577447920.

The previous prime is 1011323099. The next prime is 1011323123. The reversal of 1011323103 is 3013231101.

It is not a de Polignac number, because 1011323103 - 2² = 1011323099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011323123) 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 23 ways as a sum of consecutive naturals, for example, 308688 + ... + 311946.

It is an arithmetic number, because the mean of its divisors is an integer number (65408640).

Almost surely, 2^1011323103 is an apocalyptic number.

1011323103 is a deficient number, since it is larger than the sum of its proper divisors (558484257).

1011323103 is a wasteful number, since it uses less digits than its factorization.

1011323103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5387 (or 5380 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 1011323103 is about 31801.3066240996. The cubic root of 1011323103 is about 1003.7602107596.

Adding to 1011323103 its reverse (3013231101), we get a palindrome (4024554204).

The spelling of 1011323103 in words is "one billion, eleven million, three hundred twenty-three thousand, one hundred three".