202131211340 has 12 divisors (see below), whose sum is σ = 424475543856. Its totient is φ = 80852484528.

The previous prime is 202131211277. The next prime is 202131211379. The reversal of 202131211340 is 43112131202.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 10106560567 = 202131211340 / (2 + 0 + 2 + 1 + 3 + 1 + 2 + 1 + 1 + 3 + 4 + 0).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5053280264 + ... + 5053280303.

It is an arithmetic number, because the mean of its divisors is an integer number (35372961988).

Almost surely, 2^202131211340 is an apocalyptic number.

202131211340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202131211340 is an abundant number, since it is smaller than the sum of its proper divisors (222344332516).

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

202131211340 is a wasteful number, since it uses less digits than its factorization.

202131211340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10106560576 (or 10106560574 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 202131211340 its reverse (43112131202), we get a palindrome (245243342542).

The spelling of 202131211340 in words is "two hundred two billion, one hundred thirty-one million, two hundred eleven thousand, three hundred forty".