20130011023 has 4 divisors (see below), whose sum is σ = 20201142088. Its totient is φ = 20058879960.

The previous prime is 20130011017. The next prime is 20130011053. The reversal of 20130011023 is 32011003102.

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

It is a cyclic number.

It is not a de Polignac number, because 20130011023 - 2¹³ = 20130002831 is a prime.

It is a super-2 number, since 2×20130011023² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20130010994 and 20130011012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20130011003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35565108 + ... + 35565673.

It is an arithmetic number, because the mean of its divisors is an integer number (5050285522).

Almost surely, 2^20130011023 is an apocalyptic number.

20130011023 is a deficient number, since it is larger than the sum of its proper divisors (71131065).

20130011023 is an equidigital number, since it uses as much as digits as its factorization.

20130011023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71131064.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 20130011023 its reverse (32011003102), we get a palindrome (52141014125).

The spelling of 20130011023 in words is "twenty billion, one hundred thirty million, eleven thousand, twenty-three".