631744253 has 8 divisors (see below), whose sum is σ = 741507072. Its totient is φ = 526859856.

The previous prime is 631744247. The next prime is 631744279. The reversal of 631744253 is 352447136.

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 631744253 - 2⁶ = 631744189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631744213) by changing a digit.

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, 1219325 + ... + 1219842.

It is an arithmetic number, because the mean of its divisors is an integer number (92688384).

Almost surely, 2^631744253 is an apocalyptic number.

It is an amenable number.

631744253 is a deficient number, since it is larger than the sum of its proper divisors (109762819).

631744253 is a wasteful number, since it uses less digits than its factorization.

631744253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2439211.

The product of its digits is 60480, while the sum is 35.

The square root of 631744253 is about 25134.5231305470. The cubic root of 631744253 is about 858.0523135042.

The spelling of 631744253 in words is "six hundred thirty-one million, seven hundred forty-four thousand, two hundred fifty-three".