201131252 has 24 divisors (see below), whose sum is σ = 402657024. Its totient is φ = 86114592.

The previous prime is 201131219. The next prime is 201131257. The reversal of 201131252 is 252131102.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 201131252.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201131257) 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, 31733 + ... + 37539.

It is an arithmetic number, because the mean of its divisors is an integer number (16777376).

Almost surely, 2^201131252 is an apocalyptic number.

It is an amenable number.

201131252 is an abundant number, since it is smaller than the sum of its proper divisors (201525772).

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

201131252 is a wasteful number, since it uses less digits than its factorization.

201131252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7055 (or 7053 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 201131252 is about 14182.0750244807. The cubic root of 201131252 is about 585.9040755907.

Adding to 201131252 its reverse (252131102), we get a palindrome (453262354).

The spelling of 201131252 in words is "two hundred one million, one hundred thirty-one thousand, two hundred fifty-two".