631616339 has 4 divisors (see below), whose sum is σ = 636589824. Its totient is φ = 626642856.

The previous prime is 631616309. The next prime is 631616341. The reversal of 631616339 is 933616136.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-631616339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (631616309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2486552 + ... + 2486805.

It is an arithmetic number, because the mean of its divisors is an integer number (159147456).

Almost surely, 2^631616339 is an apocalyptic number.

631616339 is a deficient number, since it is larger than the sum of its proper divisors (4973485).

631616339 is a wasteful number, since it uses less digits than its factorization.

631616339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4973484.

The product of its digits is 52488, while the sum is 38.

The square root of 631616339 is about 25131.9784139649. The cubic root of 631616339 is about 857.9943974980.

The spelling of 631616339 in words is "six hundred thirty-one million, six hundred sixteen thousand, three hundred thirty-nine".