420830782831 has 2 divisors, whose sum is σ = 420830782832. Its totient is φ = 420830782830.

The previous prime is 420830782819. The next prime is 420830782837. The reversal of 420830782831 is 138287038024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 420830782831 - 2³⁷ = 283391829359 is a prime.

It is a super-2 number, since 2×420830782831² (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 (420830782837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210415391415 + 210415391416.

It is an arithmetic number, because the mean of its divisors is an integer number (210415391416).

Almost surely, 2^420830782831 is an apocalyptic number.

420830782831 is a deficient number, since it is larger than the sum of its proper divisors (1).

420830782831 is an equidigital number, since it uses as much as digits as its factorization.

420830782831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 516096, while the sum is 46.

The spelling of 420830782831 in words is "four hundred twenty billion, eight hundred thirty million, seven hundred eighty-two thousand, eight hundred thirty-one".