21322303131 has 16 divisors (see below), whose sum is σ = 29265919488. Its totient is φ = 13798562400.

The previous prime is 21322303129. The next prime is 21322303153. The reversal of 21322303131 is 13130322312.

It is not a de Polignac number, because 21322303131 - 2¹ = 21322303129 is a prime.

It is a super-2 number, since 2×21322303131² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21322303098 and 21322303107.

It is not an unprimeable number, because it can be changed into a prime (21322303931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 175005 + ... + 270686.

It is an arithmetic number, because the mean of its divisors is an integer number (1829119968).

Almost surely, 2^21322303131 is an apocalyptic number.

21322303131 is a deficient number, since it is larger than the sum of its proper divisors (7943616357).

21322303131 is a wasteful number, since it uses less digits than its factorization.

21322303131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446162.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 21322303131 its reverse (13130322312), we get a palindrome (34452625443).

The spelling of 21322303131 in words is "twenty-one billion, three hundred twenty-two million, three hundred three thousand, one hundred thirty-one".