631128254 has 8 divisors (see below), whose sum is σ = 948130920. Its totient is φ = 315084616.

The previous prime is 631128241. The next prime is 631128259. The reversal of 631128254 is 452821136.

631128254 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 super-4 number, since 4×631128254⁴ (a number of 36 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 631128254.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631128259) 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, 238109 + ... + 240744.

It is an arithmetic number, because the mean of its divisors is an integer number (118516365).

Almost surely, 2^631128254 is an apocalyptic number.

631128254 is a deficient number, since it is larger than the sum of its proper divisors (317002666).

631128254 is a wasteful number, since it uses less digits than its factorization.

631128254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479514.

The product of its digits is 11520, while the sum is 32.

The square root of 631128254 is about 25122.2661000157. The cubic root of 631128254 is about 857.7733339156.

The spelling of 631128254 in words is "six hundred thirty-one million, one hundred twenty-eight thousand, two hundred fifty-four".