21313131230301 has 4 divisors (see below), whose sum is σ = 28417508307072. Its totient is φ = 14208754153532.

The previous prime is 21313131230299. The next prime is 21313131230359. The reversal of 21313131230301 is 10303213131312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21313131230301 - 2¹ = 21313131230299 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21313131230101) 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, 3552188538381 + ... + 3552188538386.

It is an arithmetic number, because the mean of its divisors is an integer number (7104377076768).

Almost surely, 2^{21313131230301} is an apocalyptic number.

It is an amenable number.

21313131230301 is a deficient number, since it is larger than the sum of its proper divisors (7104377076771).

21313131230301 is an equidigital number, since it uses as much as digits as its factorization.

21313131230301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7104377076770.

The product of its (nonzero) digits is 972, while the sum is 24.

Adding to 21313131230301 its reverse (10303213131312), we get a palindrome (31616344361613).

The spelling of 21313131230301 in words is "twenty-one trillion, three hundred thirteen billion, one hundred thirty-one million, two hundred thirty thousand, three hundred one".