202131320 has 64 divisors (see below), whose sum is σ = 466352640. Its totient is φ = 78825600.

The previous prime is 202131313. The next prime is 202131361. The reversal of 202131320 is 23131202.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 202131295 and 202131304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 292175 + ... + 292865.

It is an arithmetic number, because the mean of its divisors is an integer number (7286760).

Almost surely, 2^202131320 is an apocalyptic number.

202131320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 202131320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (233176320).

202131320 is an abundant number, since it is smaller than the sum of its proper divisors (264221320).

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

202131320 is a wasteful number, since it uses less digits than its factorization.

202131320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876 (or 872 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 202131320 is about 14217.2894744392. The cubic root of 202131320 is about 586.8735510592.

Adding to 202131320 its reverse (23131202), we get a palindrome (225262522).

The spelling of 202131320 in words is "two hundred two million, one hundred thirty-one thousand, three hundred twenty".