420634331 has 16 divisors (see below), whose sum is σ = 477620640. Its totient is φ = 367234560.

The previous prime is 420634321. The next prime is 420634351. The reversal of 420634331 is 133436024.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 420634331 - 2¹⁰ = 420633307 is a prime.

It is a super-2 number, since 2×420634331² = 353866480831635122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 420634331.

It is not an unprimeable number, because it can be changed into a prime (420634321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 216641 + ... + 218573.

It is an arithmetic number, because the mean of its divisors is an integer number (29851290).

Almost surely, 2^420634331 is an apocalyptic number.

420634331 is a deficient number, since it is larger than the sum of its proper divisors (56986309).

420634331 is a wasteful number, since it uses less digits than its factorization.

420634331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2846.

The product of its (nonzero) digits is 5184, while the sum is 26.

The square root of 420634331 is about 20509.3717846257. The cubic root of 420634331 is about 749.2640668468.

The spelling of 420634331 in words is "four hundred twenty million, six hundred thirty-four thousand, three hundred thirty-one".