21303432020131 has 4 divisors (see below), whose sum is σ = 21392567719200. Its totient is φ = 21214296321064.

The previous prime is 21303432020099. The next prime is 21303432020141. The reversal of 21303432020131 is 13102023430312.

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 21303432020131 - 2⁵ = 21303432020099 is a prime.

It is a super-2 number, since 2×21303432020131² (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 = 21303432020096 and 21303432020105.

It is not an unprimeable number, because it can be changed into a prime (21303432020141) 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, 44567849176 + ... + 44567849653.

It is an arithmetic number, because the mean of its divisors is an integer number (5348141929800).

Almost surely, 2^{21303432020131} is an apocalyptic number.

21303432020131 is a deficient number, since it is larger than the sum of its proper divisors (89135699069).

21303432020131 is an equidigital number, since it uses as much as digits as its factorization.

21303432020131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89135699068.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 21303432020131 its reverse (13102023430312), we get a palindrome (34405455450443).

The spelling of 21303432020131 in words is "twenty-one trillion, three hundred three billion, four hundred thirty-two million, twenty thousand, one hundred thirty-one".