631073 has 4 divisors (see below), whose sum is σ = 640560. Its totient is φ = 621588.

The previous prime is 631061. The next prime is 631121. The reversal of 631073 is 370136.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-631073 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (631003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4643 + ... + 4776.

It is an arithmetic number, because the mean of its divisors is an integer number (160140).

2⁶³¹⁰⁷³ is an apocalyptic number.

It is an amenable number.

631073 is a deficient number, since it is larger than the sum of its proper divisors (9487).

631073 is an equidigital number, since it uses as much as digits as its factorization.

631073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9486.

The product of its (nonzero) digits is 378, while the sum is 20.

The square root of 631073 is about 794.4010322249. The cubic root of 631073 is about 85.7748301079.

The spelling of 631073 in words is "six hundred thirty-one thousand, seventy-three".