20311423014013 has 4 divisors (see below), whose sum is σ = 20318405286780. Its totient is φ = 20304440741248.

The previous prime is 20311423014011. The next prime is 20311423014053. The reversal of 20311423014013 is 31041032411302.

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

It can be written as a sum of positive squares in 2 ways, for example, as 14581805243769 + 5729617770244 = 3818613^2 + 2393662^2 .

It is a cyclic number.

It is not a de Polignac number, because 20311423014013 - 2¹ = 20311423014011 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20311423014011) 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, 3491132020 + ... + 3491137837.

It is an arithmetic number, because the mean of its divisors is an integer number (5079601321695).

Almost surely, 2^{20311423014013} is an apocalyptic number.

It is an amenable number.

20311423014013 is a deficient number, since it is larger than the sum of its proper divisors (6982272767).

20311423014013 is an equidigital number, since it uses as much as digits as its factorization.

20311423014013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6982272766.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 20311423014013 its reverse (31041032411302), we get a palindrome (51352455425315).

The spelling of 20311423014013 in words is "twenty trillion, three hundred eleven billion, four hundred twenty-three million, fourteen thousand, thirteen".