202131313340 has 24 divisors (see below), whose sum is σ = 463064463792. Its totient is φ = 73502295680.

The previous prime is 202131313339. The next prime is 202131313361. The reversal of 202131313340 is 43313131202.

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 7 ways as a sum of consecutive naturals, for example, 459389129 + ... + 459389568.

It is an arithmetic number, because the mean of its divisors is an integer number (19294352658).

Almost surely, 2^202131313340 is an apocalyptic number.

202131313340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202131313340 is an abundant number, since it is smaller than the sum of its proper divisors (260933150452).

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

202131313340 is a wasteful number, since it uses less digits than its factorization.

202131313340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 918778717 (or 918778715 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 202131313340 its reverse (43313131202), we get a palindrome (245444444542).

The spelling of 202131313340 in words is "two hundred two billion, one hundred thirty-one million, three hundred thirteen thousand, three hundred forty".