631201 has 4 divisors (see below), whose sum is σ = 633412. Its totient is φ = 628992.

The previous prime is 631187. The next prime is 631223. The reversal of 631201 is 102136.

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

It can be written as a sum of positive squares in 2 ways, for example, as 76176 + 555025 = 276^2 + 745^2 .

It is a cyclic number.

It is not a de Polignac number, because 631201 - 2⁹ = 630689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (631271) 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, 600 + ... + 1273.

It is an arithmetic number, because the mean of its divisors is an integer number (158353).

2⁶³¹²⁰¹ is an apocalyptic number.

It is an amenable number.

631201 is a deficient number, since it is larger than the sum of its proper divisors (2211).

631201 is a wasteful number, since it uses less digits than its factorization.

631201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2210.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 631201 is about 794.4815919831. The cubic root of 631201 is about 85.7806289278.

Adding to 631201 its reverse (102136), we get a palindrome (733337).

The spelling of 631201 in words is "six hundred thirty-one thousand, two hundred one".