21303210232131 has 8 divisors (see below), whose sum is σ = 29008626699264. Its totient is φ = 13899966959880.

The previous prime is 21303210232123. The next prime is 21303210232133. The reversal of 21303210232131 is 13123201230312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21303210232131 - 2³ = 21303210232123 is a prime.

It is a super-2 number, since 2×21303210232131² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21303210232133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75543298555 + ... + 75543298836.

It is an arithmetic number, because the mean of its divisors is an integer number (3626078337408).

Almost surely, 2^{21303210232131} is an apocalyptic number.

21303210232131 is a deficient number, since it is larger than the sum of its proper divisors (7705416467133).

21303210232131 is a wasteful number, since it uses less digits than its factorization.

21303210232131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151086597441.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 21303210232131 its reverse (13123201230312), we get a palindrome (34426411462443).

The spelling of 21303210232131 in words is "twenty-one trillion, three hundred three billion, two hundred ten million, two hundred thirty-two thousand, one hundred thirty-one".