631743438 has 24 divisors (see below), whose sum is σ = 1320816168. Its totient is φ = 201424432.

The previous prime is 631743433. The next prime is 631743473. The reversal of 631743438 is 834347136.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 631743396 and 631743405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631743433) 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 11 ways as a sum of consecutive naturals, for example, 96345 + ... + 102692.

It is an arithmetic number, because the mean of its divisors is an integer number (55034007).

Almost surely, 2^631743438 is an apocalyptic number.

631743438 is an abundant number, since it is smaller than the sum of its proper divisors (689072730).

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

631743438 is a wasteful number, since it uses less digits than its factorization.

631743438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199088 (or 199065 counting only the distinct ones).

The product of its digits is 145152, while the sum is 39.

The square root of 631743438 is about 25134.5069177814. The cubic root of 631743438 is about 858.0519445190.

The spelling of 631743438 in words is "six hundred thirty-one million, seven hundred forty-three thousand, four hundred thirty-eight".