20130311023 has 4 divisors (see below), whose sum is σ = 20130735600. Its totient is φ = 20129886448.

The previous prime is 20130311021. The next prime is 20130311041. The reversal of 20130311023 is 32011303102.

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 20130311023 - 2¹ = 20130311021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20130310988 and 20130311006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20130311021) 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, 130723 + ... + 239476.

It is an arithmetic number, because the mean of its divisors is an integer number (5032683900).

Almost surely, 2^20130311023 is an apocalyptic number.

20130311023 is a deficient number, since it is larger than the sum of its proper divisors (424577).

20130311023 is an equidigital number, since it uses as much as digits as its factorization.

20130311023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424576.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 20130311023 its reverse (32011303102), we get a palindrome (52141614125).

The spelling of 20130311023 in words is "twenty billion, one hundred thirty million, three hundred eleven thousand, twenty-three".