631408611 has 8 divisors (see below), whose sum is σ = 891400464. Its totient is φ = 396177920.

The previous prime is 631408597. The next prime is 631408633. The reversal of 631408611 is 116804136.

631408611 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-631408611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (631408681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6190230 + ... + 6190331.

It is an arithmetic number, because the mean of its divisors is an integer number (111425058).

Almost surely, 2^631408611 is an apocalyptic number.

631408611 is a deficient number, since it is larger than the sum of its proper divisors (259991853).

631408611 is a wasteful number, since it uses less digits than its factorization.

631408611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12380581.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 631408611 is about 25127.8453314247. The cubic root of 631408611 is about 857.9003272048.

The spelling of 631408611 in words is "six hundred thirty-one million, four hundred eight thousand, six hundred eleven".