321311013061 has 2 divisors, whose sum is σ = 321311013062. Its totient is φ = 321311013060.

The previous prime is 321311013047. The next prime is 321311013131. The reversal of 321311013061 is 160310113123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 204145830625 + 117165182436 = 451825^2 + 342294^2 .

It is a cyclic number.

It is not a de Polignac number, because 321311013061 - 2¹³ = 321311004869 is a prime.

It is a super-2 number, since 2×321311013061² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321311011061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160655506530 + 160655506531.

It is an arithmetic number, because the mean of its divisors is an integer number (160655506531).

Almost surely, 2^321311013061 is an apocalyptic number.

It is an amenable number.

321311013061 is a deficient number, since it is larger than the sum of its proper divisors (1).

321311013061 is an equidigital number, since it uses as much as digits as its factorization.

321311013061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 321311013061 its reverse (160310113123), we get a palindrome (481621126184).

The spelling of 321311013061 in words is "three hundred twenty-one billion, three hundred eleven million, thirteen thousand, sixty-one".