321420301142453 has 2 divisors, whose sum is σ = 321420301142454. Its totient is φ = 321420301142452.

The previous prime is 321420301142443. The next prime is 321420301142503. The reversal of 321420301142453 is 354241103024123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 314587759970884 + 6832541171569 = 17736622^2 + 2613913^2 .

It is a cyclic number.

It is not a de Polignac number, because 321420301142453 - 2¹² = 321420301138357 is a prime.

It is a super-2 number, since 2×321420301142453² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321420301142443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160710150571226 + 160710150571227.

It is an arithmetic number, because the mean of its divisors is an integer number (160710150571227).

Almost surely, 2^{321420301142453} is an apocalyptic number.

It is an amenable number.

321420301142453 is a deficient number, since it is larger than the sum of its proper divisors (1).

321420301142453 is an equidigital number, since it uses as much as digits as its factorization.

321420301142453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 35.

Adding to 321420301142453 its reverse (354241103024123), we get a palindrome (675661404166576).

The spelling of 321420301142453 in words is "three hundred twenty-one trillion, four hundred twenty billion, three hundred one million, one hundred forty-two thousand, four hundred fifty-three".