631530201 has 8 divisors (see below), whose sum is σ = 842211040. Its totient is φ = 420934752.

The previous prime is 631530191. The next prime is 631530209. The reversal of 631530201 is 102035136.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 631530201 - 2¹⁷ = 631399129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (631530209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1435 + ... + 35568.

It is an arithmetic number, because the mean of its divisors is an integer number (105276380).

Almost surely, 2^631530201 is an apocalyptic number.

It is an amenable number.

631530201 is a deficient number, since it is larger than the sum of its proper divisors (210680839).

631530201 is a wasteful number, since it uses less digits than its factorization.

631530201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42695.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 631530201 is about 25130.2646424585. The cubic root of 631530201 is about 857.9553921310.

Adding to 631530201 its reverse (102035136), we get a palindrome (733565337).

The spelling of 631530201 in words is "six hundred thirty-one million, five hundred thirty thousand, two hundred one".