21200303131 has 8 divisors (see below), whose sum is σ = 24229918944. Its totient is φ = 18170937600.

The previous prime is 21200303129. The next prime is 21200303143. The reversal of 21200303131 is 13130300212.

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 21200303131 - 2¹ = 21200303129 is a prime.

It is a super-2 number, since 2×21200303131² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21200303161) 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, 183441 + ... + 275773.

It is an arithmetic number, because the mean of its divisors is an integer number (3028739868).

Almost surely, 2^21200303131 is an apocalyptic number.

21200303131 is a deficient number, since it is larger than the sum of its proper divisors (3029615813).

21200303131 is an equidigital number, since it uses as much as digits as its factorization.

21200303131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125141.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 21200303131 its reverse (13130300212), we get a palindrome (34330603343).

The spelling of 21200303131 in words is "twenty-one billion, two hundred million, three hundred three thousand, one hundred thirty-one".