21143300131 has 8 divisors (see below), whose sum is σ = 21213258560. Its totient is φ = 21073385088.

The previous prime is 21143300119. The next prime is 21143300159. The reversal of 21143300131 is 13100334112.

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

It is a cyclic number.

It is not a de Polignac number, because 21143300131 - 2²⁹ = 20606429219 is a prime.

It is a super-2 number, since 2×21143300131² (a number of 21 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 = 21143300099 and 21143300108.

It is not an unprimeable number, because it can be changed into a prime (21143300161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1176310 + ... + 1194148.

It is an arithmetic number, because the mean of its divisors is an integer number (2651657320).

Almost surely, 2^21143300131 is an apocalyptic number.

21143300131 is a deficient number, since it is larger than the sum of its proper divisors (69958429).

21143300131 is a wasteful number, since it uses less digits than its factorization.

21143300131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21693.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 21143300131 its reverse (13100334112), we get a palindrome (34243634243).

The spelling of 21143300131 in words is "twenty-one billion, one hundred forty-three million, three hundred thousand, one hundred thirty-one".