201531196 has 24 divisors (see below), whose sum is σ = 361625264. Its totient is φ = 98219520.

The previous prime is 201531181. The next prime is 201531199. The reversal of 201531196 is 691135102.

It is a super-2 number, since 2×201531196² = 81229645922380832, which contains 22 as substring.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201531199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114886 + ... + 116626.

Almost surely, 2^201531196 is an apocalyptic number.

It is an amenable number.

201531196 is a deficient number, since it is larger than the sum of its proper divisors (160094068).

201531196 is a wasteful number, since it uses less digits than its factorization.

201531196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2461 (or 2459 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 201531196 is about 14196.1683562854. The cubic root of 201531196 is about 586.2921698821.

Adding to 201531196 its reverse (691135102), we get a palindrome (892666298).

The spelling of 201531196 in words is "two hundred one million, five hundred thirty-one thousand, one hundred ninety-six".