201631227 has 12 divisors (see below), whose sum is σ = 312734376. Its totient is φ = 115217760.

The previous prime is 201631219. The next prime is 201631231. The reversal of 201631227 is 722136102.

201631227 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 201631227 - 2³ = 201631219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201631197 and 201631206.

It is not an unprimeable number, because it can be changed into a prime (201631217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 685674 + ... + 685967.

It is an arithmetic number, because the mean of its divisors is an integer number (26061198).

Almost surely, 2^201631227 is an apocalyptic number.

201631227 is a deficient number, since it is larger than the sum of its proper divisors (111103149).

201631227 is a wasteful number, since it uses less digits than its factorization.

201631227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1371658 (or 1371651 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 201631227 is about 14199.6910881892. The cubic root of 201631227 is about 586.3891568376.

Adding to 201631227 its reverse (722136102), we get a palindrome (923767329).

The spelling of 201631227 in words is "two hundred one million, six hundred thirty-one thousand, two hundred twenty-seven".