631961934 has 8 divisors (see below), whose sum is σ = 1263923880. Its totient is φ = 210653976.

The previous prime is 631961933. The next prime is 631961963. The reversal of 631961934 is 439169136.

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

631961934 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631961933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52663489 + ... + 52663500.

It is an arithmetic number, because the mean of its divisors is an integer number (157990485).

Almost surely, 2^631961934 is an apocalyptic number.

631961934 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

631961934 is a wasteful number, since it uses less digits than its factorization.

631961934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105326994.

The product of its digits is 104976, while the sum is 42.

The square root of 631961934 is about 25138.8530764631. The cubic root of 631961934 is about 858.1508556150.

The spelling of 631961934 in words is "six hundred thirty-one million, nine hundred sixty-one thousand, nine hundred thirty-four".