631426055 has 8 divisors (see below), whose sum is σ = 815996832. Its totient is φ = 466283808.

The previous prime is 631426049. The next prime is 631426097. The reversal of 631426055 is 550624136.

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 631426055 - 2⁸ = 631425799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4857059 + ... + 4857188.

It is an arithmetic number, because the mean of its divisors is an integer number (101999604).

Almost surely, 2^631426055 is an apocalyptic number.

631426055 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

631426055 is a deficient number, since it is larger than the sum of its proper divisors (184570777).

631426055 is a wasteful number, since it uses less digits than its factorization.

631426055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9714265.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 631426055 is about 25128.1924339973. The cubic root of 631426055 is about 857.9082275698.

The spelling of 631426055 in words is "six hundred thirty-one million, four hundred twenty-six thousand, fifty-five".