421982631 has 24 divisors (see below), whose sum is σ = 699149984. Its totient is φ = 240252480.

The previous prime is 421982611. The next prime is 421982681. The reversal of 421982631 is 136289124.

421982631 is a `hidden beast` number, since 4 + 2 + 19 + 8 + 2 + 631 = 666.

It is not a de Polignac number, because 421982631 - 2⁵ = 421982599 is a prime.

It is a super-2 number, since 2×421982631² = 356138681731364322, 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 (421982611) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5361 + ... + 29541.

Almost surely, 2^421982631 is an apocalyptic number.

421982631 is a deficient number, since it is larger than the sum of its proper divisors (277167353).

421982631 is a wasteful number, since it uses less digits than its factorization.

421982631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24471 (or 24468 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 421982631 is about 20542.2158249786. The cubic root of 421982631 is about 750.0637759100.

The spelling of 421982631 in words is "four hundred twenty-one million, nine hundred eighty-two thousand, six hundred thirty-one".