1011000123 has 20 divisors (see below), whose sum is σ = 1726011760. Its totient is φ = 577714032.

The previous prime is 1011000101. The next prime is 1011000187. The reversal of 1011000123 is 3210001101.

1011000123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1011000123 - 2¹⁴ = 1010983739 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1011002123) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 890968 + ... + 892101.

It is an arithmetic number, because the mean of its divisors is an integer number (86300588).

Almost surely, 2^1011000123 is an apocalyptic number.

1011000123 is a deficient number, since it is larger than the sum of its proper divisors (715011637).

1011000123 is an equidigital number, since it uses as much as digits as its factorization.

1011000123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1783088 (or 1783079 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 1011000123 is about 31796.2281253610. The cubic root of 1011000123 is about 1003.6533444871.

Adding to 1011000123 its reverse (3210001101), we get a palindrome (4221001224).

The spelling of 1011000123 in words is "one billion, eleven million, one hundred twenty-three", and thus it is an aban number.