1011013123 has 16 divisors (see below), whose sum is σ = 1106219520. Its totient is φ = 920634336.

The previous prime is 1011013121. The next prime is 1011013151. The reversal of 1011013123 is 3213101101.

It is a cyclic number.

It is not a de Polignac number, because 1011013123 - 2¹ = 1011013121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1011013121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49686 + ... + 67012.

It is an arithmetic number, because the mean of its divisors is an integer number (69138720).

Almost surely, 2^1011013123 is an apocalyptic number.

1011013123 is a deficient number, since it is larger than the sum of its proper divisors (95206397).

1011013123 is a wasteful number, since it uses less digits than its factorization.

1011013123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17466.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1011013123 is about 31796.4325514672. The cubic root of 1011013123 is about 1003.6576463123.

Adding to 1011013123 its reverse (3213101101), we get a palindrome (4224114224).

The spelling of 1011013123 in words is "one billion, eleven million, thirteen thousand, one hundred twenty-three".