20013012023 has 4 divisors (see below), whose sum is σ = 20658593088. Its totient is φ = 19367430960.

The previous prime is 20013012007. The next prime is 20013012073. The reversal of 20013012023 is 32021031002.

It is a happy number.

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 20013012023 - 2⁴ = 20013012007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20013011989 and 20013012007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20013012073) 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, 322790486 + ... + 322790547.

It is an arithmetic number, because the mean of its divisors is an integer number (5164648272).

Almost surely, 2^20013012023 is an apocalyptic number.

20013012023 is a deficient number, since it is larger than the sum of its proper divisors (645581065).

20013012023 is an equidigital number, since it uses as much as digits as its factorization.

20013012023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645581064.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 20013012023 its reverse (32021031002), we get a palindrome (52034043025).

The spelling of 20013012023 in words is "twenty billion, thirteen million, twelve thousand, twenty-three".