202131 has 12 divisors (see below), whose sum is σ = 300352. Its totient is φ = 130896.

The previous prime is 202129. The next prime is 202183. The reversal of 202131 is 131202.

It is a happy number.

202131 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 202131 - 2¹ = 202129 is a prime.

It is a super-2 number, since 2×202131² = 81713882322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202121) 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, 30 + ... + 636.

2²⁰²¹³¹ is an apocalyptic number.

202131 is a deficient number, since it is larger than the sum of its proper divisors (98221).

202131 is a wasteful number, since it uses less digits than its factorization.

202131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650 (or 647 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 202131 is about 449.5898130519. The cubic root of 202131 is about 58.6873241360.

Adding to 202131 its reverse (131202), we get a palindrome (333333).

It can be divided in two parts, 202 and 131, that multiplied together give a palindrome (26462).

The spelling of 202131 in words is "two hundred two thousand, one hundred thirty-one".