202131020135 has 16 divisors (see below), whose sum is σ = 265016904192. Its totient is φ = 146777143200.

The previous prime is 202131020123. The next prime is 202131020171. The reversal of 202131020135 is 531020131202.

It is not a de Polignac number, because 202131020135 - 2²⁴ = 202114242919 is a prime.

It is a super-3 number, since 3×202131020135³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2804531 + ... + 2875700.

It is an arithmetic number, because the mean of its divisors is an integer number (16563556512).

Almost surely, 2^202131020135 is an apocalyptic number.

202131020135 is a deficient number, since it is larger than the sum of its proper divisors (62885884057).

202131020135 is a wasteful number, since it uses less digits than its factorization.

202131020135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5680894.

The product of its (nonzero) digits is 360, while the sum is 20.

Adding to 202131020135 its reverse (531020131202), we get a palindrome (733151151337).

The spelling of 202131020135 in words is "two hundred two billion, one hundred thirty-one million, twenty thousand, one hundred thirty-five".