420312002281 has 2 divisors, whose sum is σ = 420312002282. Its totient is φ = 420312002280.

The previous prime is 420312002267. The next prime is 420312002311. The reversal of 420312002281 is 182200213024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 393975905625 + 26336096656 = 627675^2 + 162284^2 .

It is a cyclic number.

It is not a de Polignac number, because 420312002281 - 2⁷ = 420312002153 is a prime.

It is a super-2 number, since 2×420312002281² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (420312000281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210156001140 + 210156001141.

It is an arithmetic number, because the mean of its divisors is an integer number (210156001141).

Almost surely, 2^420312002281 is an apocalyptic number.

It is an amenable number.

420312002281 is a deficient number, since it is larger than the sum of its proper divisors (1).

420312002281 is an equidigital number, since it uses as much as digits as its factorization.

420312002281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 25.

The spelling of 420312002281 in words is "four hundred twenty billion, three hundred twelve million, two thousand, two hundred eighty-one".