420963631 has 8 divisors (see below), whose sum is σ = 469004544. Its totient is φ = 374551320.

The previous prime is 420963611. The next prime is 420963649. The reversal of 420963631 is 136369024.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 420963631 - 2⁹ = 420963119 is a prime.

It is a super-2 number, since 2×420963631² = 354420757249408322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420963611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 406605 + ... + 407638.

It is an arithmetic number, because the mean of its divisors is an integer number (58625568).

Almost surely, 2^420963631 is an apocalyptic number.

420963631 is a deficient number, since it is larger than the sum of its proper divisors (48040913).

420963631 is a wasteful number, since it uses less digits than its factorization.

420963631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814301.

The product of its (nonzero) digits is 23328, while the sum is 34.

The square root of 420963631 is about 20517.3982512403. The cubic root of 420963631 is about 749.4595401125.

The spelling of 420963631 in words is "four hundred twenty million, nine hundred sixty-three thousand, six hundred thirty-one".