421444110313 has 2 divisors, whose sum is σ = 421444110314. Its totient is φ = 421444110312.

The previous prime is 421444110293. The next prime is 421444110359. The reversal of 421444110313 is 313011444124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 411532514064 + 9911596249 = 641508^2 + 99557^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421444110313 is a prime.

It is a super-2 number, since 2×421444110313² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (421444110383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210722055156 + 210722055157.

It is an arithmetic number, because the mean of its divisors is an integer number (210722055157).

Almost surely, 2^421444110313 is an apocalyptic number.

It is an amenable number.

421444110313 is a deficient number, since it is larger than the sum of its proper divisors (1).

421444110313 is an equidigital number, since it uses as much as digits as its factorization.

421444110313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 421444110313 its reverse (313011444124), we get a palindrome (734455554437).

The spelling of 421444110313 in words is "four hundred twenty-one billion, four hundred forty-four million, one hundred ten thousand, three hundred thirteen".