202135064531 has 4 divisors (see below), whose sum is σ = 209105239200. Its totient is φ = 195164889864.

The previous prime is 202135064489. The next prime is 202135064557. The reversal of 202135064531 is 135460531202.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 202135064531 - 2²⁶ = 202067955667 is a prime.

It is a super-2 number, since 2×202135064531² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202135064581) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3485087291 + ... + 3485087348.

It is an arithmetic number, because the mean of its divisors is an integer number (52276309800).

Almost surely, 2^202135064531 is an apocalyptic number.

202135064531 is a deficient number, since it is larger than the sum of its proper divisors (6970174669).

202135064531 is an equidigital number, since it uses as much as digits as its factorization.

202135064531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6970174668.

The product of its (nonzero) digits is 21600, while the sum is 32.

Adding to 202135064531 its reverse (135460531202), we get a palindrome (337595595733).

The spelling of 202135064531 in words is "two hundred two billion, one hundred thirty-five million, sixty-four thousand, five hundred thirty-one".