424420631 has 2 divisors, whose sum is σ = 424420632. Its totient is φ = 424420630.

The previous prime is 424420573. The next prime is 424420649. The reversal of 424420631 is 136024424.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 424420631 - 2⁶ = 424420567 is a prime.

It is a super-2 number, since 2×424420631² = 360265744036876322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 424420631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (424420681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212210315 + 212210316.

It is an arithmetic number, because the mean of its divisors is an integer number (212210316).

Almost surely, 2^424420631 is an apocalyptic number.

424420631 is a deficient number, since it is larger than the sum of its proper divisors (1).

424420631 is an equidigital number, since it uses as much as digits as its factorization.

424420631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 424420631 is about 20601.4715736522. The cubic root of 424420631 is about 751.5054980196.

The spelling of 424420631 in words is "four hundred twenty-four million, four hundred twenty thousand, six hundred thirty-one".