631344539 has 8 divisors (see below), whose sum is σ = 722251488. Its totient is φ = 540616320.

The previous prime is 631344523. The next prime is 631344569. The reversal of 631344539 is 935443136.

631344539 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 not a de Polignac number, because 631344539 - 2⁴ = 631344523 is a prime.

It is not an unprimeable number, because it can be changed into a prime (631344569) 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, 37022 + ... + 51315.

It is an arithmetic number, because the mean of its divisors is an integer number (90281436).

Almost surely, 2^631344539 is an apocalyptic number.

631344539 is a deficient number, since it is larger than the sum of its proper divisors (90906949).

631344539 is a wasteful number, since it uses less digits than its factorization.

631344539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89365.

The product of its digits is 116640, while the sum is 38.

The square root of 631344539 is about 25126.5703787843. The cubic root of 631344539 is about 857.8713078301.

The spelling of 631344539 in words is "six hundred thirty-one million, three hundred forty-four thousand, five hundred thirty-nine".