20131023211301 has 4 divisors (see below), whose sum is σ = 20160758844492. Its totient is φ = 20101287578112.

The previous prime is 20131023211297. The next prime is 20131023211331. The reversal of 20131023211301 is 10311232013102.

It is a happy number.

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 16688981596225 + 3442041615076 = 4085215^2 + 1855274^2 .

It is a cyclic number.

It is not a de Polignac number, because 20131023211301 - 2² = 20131023211297 is a prime.

It is a super-2 number, since 2×20131023211301² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20131023211331) 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, 14867815580 + ... + 14867816933.

It is an arithmetic number, because the mean of its divisors is an integer number (5040189711123).

Almost surely, 2^{20131023211301} is an apocalyptic number.

It is an amenable number.

20131023211301 is a deficient number, since it is larger than the sum of its proper divisors (29735633191).

20131023211301 is an equidigital number, since it uses as much as digits as its factorization.

20131023211301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29735633190.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 20131023211301 its reverse (10311232013102), we get a palindrome (30442255224403).

The spelling of 20131023211301 in words is "twenty trillion, one hundred thirty-one billion, twenty-three million, two hundred eleven thousand, three hundred one".