631522426 has 16 divisors (see below), whose sum is σ = 1027472040. Its totient is φ = 289937920.

The previous prime is 631522393. The next prime is 631522427. The reversal of 631522426 is 624225136.

It can be written as a sum of positive squares in 4 ways, for example, as 617572201 + 13950225 = 24851^2 + 3735^2 .

It is not an unprimeable number, because it can be changed into a prime (631522427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 225121 + ... + 227908.

Almost surely, 2^631522426 is an apocalyptic number.

631522426 is a deficient number, since it is larger than the sum of its proper divisors (395949614).

631522426 is a wasteful number, since it uses less digits than its factorization.

631522426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453089.

The product of its digits is 17280, while the sum is 31.

The square root of 631522426 is about 25130.1099480285. The cubic root of 631522426 is about 857.9518712487.

The spelling of 631522426 in words is "six hundred thirty-one million, five hundred twenty-two thousand, four hundred twenty-six".