1011123003 has 16 divisors (see below), whose sum is σ = 1471257216. Its totient is φ = 612579840.

The previous prime is 1011122993. The next prime is 1011123023. The reversal of 1011123003 is 3003211101.

It is not a de Polignac number, because 1011123003 - 2¹² = 1011118907 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1011123003.

It is not an unprimeable number, because it can be changed into a prime (1011123023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 166875 + ... + 172827.

It is an arithmetic number, because the mean of its divisors is an integer number (91953576).

Almost surely, 2^1011123003 is an apocalyptic number.

1011123003 is a deficient number, since it is larger than the sum of its proper divisors (460134213).

1011123003 is a wasteful number, since it uses less digits than its factorization.

1011123003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11114.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 1011123003 is about 31798.1603713171. The cubic root of 1011123003 is about 1003.6940051899.

Adding to 1011123003 its reverse (3003211101), we get a palindrome (4014334104).

The spelling of 1011123003 in words is "one billion, eleven million, one hundred twenty-three thousand, three".