631125203 has 4 divisors (see below), whose sum is σ = 631788408. Its totient is φ = 630462000.

The previous prime is 631125197. The next prime is 631125211. The reversal of 631125203 is 302521136.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-631125203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (631125263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 330173 + ... + 332078.

It is an arithmetic number, because the mean of its divisors is an integer number (157947102).

Almost surely, 2^631125203 is an apocalyptic number.

631125203 is a deficient number, since it is larger than the sum of its proper divisors (663205).

631125203 is an equidigital number, since it uses as much as digits as its factorization.

631125203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663204.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 631125203 is about 25122.2053769171. The cubic root of 631125203 is about 857.7719516975.

Adding to 631125203 its reverse (302521136), we get a palindrome (933646339).

The spelling of 631125203 in words is "six hundred thirty-one million, one hundred twenty-five thousand, two hundred three".