631242265 has 8 divisors (see below), whose sum is σ = 759602880. Its totient is φ = 503585712.

The previous prime is 631242179. The next prime is 631242277. The reversal of 631242265 is 562242136.

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 631242265 - 2¹¹ = 631240217 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174039 + ... + 177628.

It is an arithmetic number, because the mean of its divisors is an integer number (94950360).

Almost surely, 2^631242265 is an apocalyptic number.

It is an amenable number.

631242265 is a deficient number, since it is larger than the sum of its proper divisors (128360615).

631242265 is a wasteful number, since it uses less digits than its factorization.

631242265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352031.

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

The square root of 631242265 is about 25124.5351200773. The cubic root of 631242265 is about 857.8249820060.

The spelling of 631242265 in words is "six hundred thirty-one million, two hundred forty-two thousand, two hundred sixty-five".