631103 has 4 divisors (see below), whose sum is σ = 688488. Its totient is φ = 573720.

The previous prime is 631061. The next prime is 631121. The reversal of 631103 is 301136.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 631103 - 2⁶ = 631039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28676 + ... + 28697.

It is an arithmetic number, because the mean of its divisors is an integer number (172122).

2⁶³¹¹⁰³ is an apocalyptic number.

631103 is a deficient number, since it is larger than the sum of its proper divisors (57385).

631103 is a wasteful number, since it uses less digits than its factorization.

631103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57384.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 631103 is about 794.4199141512. The cubic root of 631103 is about 85.7761892767.

Adding to 631103 its reverse (301136), we get a palindrome (932239).

The spelling of 631103 in words is "six hundred thirty-one thousand, one hundred three".