631448834 has 4 divisors (see below), whose sum is σ = 947173254. Its totient is φ = 315724416.

The previous prime is 631448801. The next prime is 631448861. The reversal of 631448834 is 438844136.

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

It can be written as a sum of positive squares in only one way, i.e., 630160609 + 1288225 = 25103^2 + 1135^2 .

It is a junction number, because it is equal to n+sod(n) for n = 631448791 and 631448800.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157862207 + ... + 157862210.

Almost surely, 2^631448834 is an apocalyptic number.

631448834 is a deficient number, since it is larger than the sum of its proper divisors (315724420).

631448834 is a wasteful number, since it uses less digits than its factorization.

631448834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315724419.

The product of its digits is 221184, while the sum is 41.

The square root of 631448834 is about 25128.6456857508. The cubic root of 631448834 is about 857.9185439303.

The spelling of 631448834 in words is "six hundred thirty-one million, four hundred forty-eight thousand, eight hundred thirty-four".