131000213321 has 2 divisors, whose sum is σ = 131000213322. Its totient is φ = 131000213320.

The previous prime is 131000213287. The next prime is 131000213353. The reversal of 131000213321 is 123312000131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97305939721 + 33694273600 = 311939^2 + 183560^2 .

It is a cyclic number.

It is not a de Polignac number, because 131000213321 - 2³⁰ = 129926471497 is a prime.

It is a super-2 number, since 2×131000213321² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 131000213321.

It is not a weakly prime, because it can be changed into another prime (131000213381) 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 as a sum of consecutive naturals, namely, 65500106660 + 65500106661.

It is an arithmetic number, because the mean of its divisors is an integer number (65500106661).

Almost surely, 2^131000213321 is an apocalyptic number.

It is an amenable number.

131000213321 is a deficient number, since it is larger than the sum of its proper divisors (1).

131000213321 is an equidigital number, since it uses as much as digits as its factorization.

131000213321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 131000213321 its reverse (123312000131), we get a palindrome (254312213452).

The spelling of 131000213321 in words is "one hundred thirty-one billion, two hundred thirteen thousand, three hundred twenty-one".