201631672 has 16 divisors (see below), whose sum is σ = 412428600. Its totient is φ = 91650720.

The previous prime is 201631649. The next prime is 201631691. The reversal of 201631672 is 276136102.

It is a self number, because there is not a number n which added to its sum of digits gives 201631672.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1145547 + ... + 1145722.

Almost surely, 2^201631672 is an apocalyptic number.

201631672 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

201631672 is an abundant number, since it is smaller than the sum of its proper divisors (210796928).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201631672 is a wasteful number, since it uses less digits than its factorization.

201631672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2291286 (or 2291282 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 201631672 is about 14199.7067575355. The cubic root of 201631672 is about 586.3895882241.

Adding to 201631672 its reverse (276136102), we get a palindrome (477767774).

The spelling of 201631672 in words is "two hundred one million, six hundred thirty-one thousand, six hundred seventy-two".