631982423 has 4 divisors (see below), whose sum is σ = 632460000. Its totient is φ = 631504848.

The previous prime is 631982411. The next prime is 631982473. The reversal of 631982423 is 324289136.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 631982423 - 2⁶ = 631982359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631982473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 236798 + ... + 239451.

It is an arithmetic number, because the mean of its divisors is an integer number (158115000).

Almost surely, 2^631982423 is an apocalyptic number.

631982423 is a deficient number, since it is larger than the sum of its proper divisors (477577).

631982423 is a wasteful number, since it uses less digits than its factorization.

631982423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477576.

The product of its digits is 62208, while the sum is 38.

The square root of 631982423 is about 25139.2605897628. The cubic root of 631982423 is about 858.1601296245.

The spelling of 631982423 in words is "six hundred thirty-one million, nine hundred eighty-two thousand, four hundred twenty-three".