321213253241 has 2 divisors, whose sum is σ = 321213253242. Its totient is φ = 321213253240.

The previous prime is 321213253187. The next prime is 321213253261. The reversal of 321213253241 is 142352312123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 316401750016 + 4811503225 = 562496^2 + 69365^2 .

It is a cyclic number.

It is not a de Polignac number, because 321213253241 - 2¹⁴ = 321213236857 is a prime.

It is not a weakly prime, because it can be changed into another prime (321213253261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160606626620 + 160606626621.

It is an arithmetic number, because the mean of its divisors is an integer number (160606626621).

Almost surely, 2^321213253241 is an apocalyptic number.

It is an amenable number.

321213253241 is a deficient number, since it is larger than the sum of its proper divisors (1).

321213253241 is an equidigital number, since it uses as much as digits as its factorization.

321213253241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 29.

Adding to 321213253241 its reverse (142352312123), we get a palindrome (463565565364).

The spelling of 321213253241 in words is "three hundred twenty-one billion, two hundred thirteen million, two hundred fifty-three thousand, two hundred forty-one".