631001073 has 4 divisors (see below), whose sum is σ = 841334768. Its totient is φ = 420667380.

The previous prime is 631001003. The next prime is 631001089. The reversal of 631001073 is 370100136.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 631001073 - 2¹⁰ = 631000049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (631001003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105166843 + ... + 105166848.

It is an arithmetic number, because the mean of its divisors is an integer number (210333692).

Almost surely, 2^631001073 is an apocalyptic number.

It is an amenable number.

631001073 is a deficient number, since it is larger than the sum of its proper divisors (210333695).

631001073 is a wasteful number, since it uses less digits than its factorization.

631001073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210333694.

The product of its (nonzero) digits is 378, while the sum is 21.

The square root of 631001073 is about 25119.7347318796. The cubic root of 631001073 is about 857.7157123475.

The spelling of 631001073 in words is "six hundred thirty-one million, one thousand, seventy-three".