201131476 has 72 divisors (see below), whose sum is σ = 444310440. Its totient is φ = 78962688.

The previous prime is 201131467. The next prime is 201131477. The reversal of 201131476 is 674131102.

It can be written as a sum of positive squares in 4 ways, for example, as 18232900 + 182898576 = 4270^2 + 13524^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 201131476.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201131477) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 491560 + ... + 491968.

Almost surely, 2^201131476 is an apocalyptic number.

201131476 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201131476, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (222155220).

201131476 is an abundant number, since it is smaller than the sum of its proper divisors (243178964).

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

201131476 is a wasteful number, since it uses less digits than its factorization.

201131476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633 (or 624 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 201131476 is about 14182.0829217714. The cubic root of 201131476 is about 585.9042930979.

Adding to 201131476 its reverse (674131102), we get a palindrome (875262578).

The spelling of 201131476 in words is "two hundred one million, one hundred thirty-one thousand, four hundred seventy-six".