20110013023 has 4 divisors (see below), whose sum is σ = 20112383808. Its totient is φ = 20107642240.

The previous prime is 20110013017. The next prime is 20110013057. The reversal of 20110013023 is 32031001102.

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-20110013023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20110012994 and 20110013012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20110013323) 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, 1172623 + ... + 1189648.

It is an arithmetic number, because the mean of its divisors is an integer number (5028095952).

Almost surely, 2^20110013023 is an apocalyptic number.

20110013023 is a deficient number, since it is larger than the sum of its proper divisors (2370785).

20110013023 is an equidigital number, since it uses as much as digits as its factorization.

20110013023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2370784.

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

Adding to 20110013023 its reverse (32031001102), we get a palindrome (52141014125).

The spelling of 20110013023 in words is "twenty billion, one hundred ten million, thirteen thousand, twenty-three".