21303113020131 has 4 divisors (see below), whose sum is σ = 28404150693512. Its totient is φ = 14202075346752.

The previous prime is 21303113020099. The next prime is 21303113020271. The reversal of 21303113020131 is 13102031130312.

It is a happy number.

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

It is not a de Polignac number, because 21303113020131 - 2⁵ = 21303113020099 is a prime.

It is a super-2 number, since 2×21303113020131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21303113020098 and 21303113020107.

It is not an unprimeable number, because it can be changed into a prime (21303113021131) 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, 3550518836686 + ... + 3550518836691.

It is an arithmetic number, because the mean of its divisors is an integer number (7101037673378).

Almost surely, 2^{21303113020131} is an apocalyptic number.

21303113020131 is a deficient number, since it is larger than the sum of its proper divisors (7101037673381).

21303113020131 is an equidigital number, since it uses as much as digits as its factorization.

21303113020131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7101037673380.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 21303113020131 its reverse (13102031130312), we get a palindrome (34405144150443).

The spelling of 21303113020131 in words is "twenty-one trillion, three hundred three billion, one hundred thirteen million, twenty thousand, one hundred thirty-one".