2011010023 has 4 divisors (see below), whose sum is σ = 2193829128. Its totient is φ = 1828190920.

The previous prime is 2011009999. The next prime is 2011010033. The reversal of 2011010023 is 3200101102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2011010023 is a prime.

It is a super-2 number, since 2×2011010023² = 8088322625212921058, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2011009991 and 2011010009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011010033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91409536 + ... + 91409557.

It is an arithmetic number, because the mean of its divisors is an integer number (548457282).

Almost surely, 2^2011010023 is an apocalyptic number.

2011010023 is a deficient number, since it is larger than the sum of its proper divisors (182819105).

2011010023 is a wasteful number, since it uses less digits than its factorization.

2011010023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182819104.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 2011010023 is about 44844.2864030637. The cubic root of 2011010023 is about 1262.2287803232.

Adding to 2011010023 its reverse (3200101102), we get a palindrome (5211111125).

The spelling of 2011010023 in words is "two billion, eleven million, ten thousand, twenty-three".