631786442 has 32 divisors (see below), whose sum is σ = 1142138880. Its totient is φ = 256048560.

The previous prime is 631786439. The next prime is 631786469. The reversal of 631786442 is 244687136.

It is a self number, because there is not a number n which added to its sum of digits gives 631786442.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 170267 + ... + 173937.

It is an arithmetic number, because the mean of its divisors is an integer number (35691840).

Almost surely, 2^631786442 is an apocalyptic number.

631786442 is a deficient number, since it is larger than the sum of its proper divisors (510352438).

631786442 is a wasteful number, since it uses less digits than its factorization.

631786442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4346.

The product of its digits is 193536, while the sum is 41.

The square root of 631786442 is about 25135.3623805188. The cubic root of 631786442 is about 858.0714138301.

The spelling of 631786442 in words is "six hundred thirty-one million, seven hundred eighty-six thousand, four hundred forty-two".