631388142926 has 8 divisors (see below), whose sum is σ = 947743127424. Its totient is φ = 315473767120.

The previous prime is 631388142893. The next prime is 631388142943. The reversal of 631388142926 is 629241883136.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 110148590 + ... + 110154321.

It is an arithmetic number, because the mean of its divisors is an integer number (118467890928).

Almost surely, 2^631388142926 is an apocalyptic number.

631388142926 is a deficient number, since it is larger than the sum of its proper divisors (316354984498).

631388142926 is a wasteful number, since it uses less digits than its factorization.

631388142926 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220304346.

The product of its digits is 2985984, while the sum is 53.

The spelling of 631388142926 in words is "six hundred thirty-one billion, three hundred eighty-eight million, one hundred forty-two thousand, nine hundred twenty-six".