322130021531 has 2 divisors, whose sum is σ = 322130021532. Its totient is φ = 322130021530.

The previous prime is 322130021509. The next prime is 322130021537. The reversal of 322130021531 is 135120031223.

It is a strong prime.

It is an emirp because it is prime and its reverse (135120031223) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 322130021531 - 2⁶ = 322130021467 is a prime.

It is a super-2 number, since 2×322130021531² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 322130021497 and 322130021506.

It is not a weakly prime, because it can be changed into another prime (322130021537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161065010765 + 161065010766.

It is an arithmetic number, because the mean of its divisors is an integer number (161065010766).

Almost surely, 2^322130021531 is an apocalyptic number.

322130021531 is a deficient number, since it is larger than the sum of its proper divisors (1).

322130021531 is an equidigital number, since it uses as much as digits as its factorization.

322130021531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 23.

Adding to 322130021531 its reverse (135120031223), we get a palindrome (457250052754).

The spelling of 322130021531 in words is "three hundred twenty-two billion, one hundred thirty million, twenty-one thousand, five hundred thirty-one".