202130223312131 has 4 divisors (see below), whose sum is σ = 202374637125912. Its totient is φ = 201885809498352.

The previous prime is 202130223312077. The next prime is 202130223312161. The reversal of 202130223312131 is 131213322031202.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202130223312131 is a prime.

It is a super-2 number, since 2×202130223312131² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 202130223312131.

It is not an unprimeable number, because it can be changed into a prime (202130223312161) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 122206905650 + ... + 122206907303.

It is an arithmetic number, because the mean of its divisors is an integer number (50593659281478).

Almost surely, 2^{202130223312131} is an apocalyptic number.

202130223312131 is a deficient number, since it is larger than the sum of its proper divisors (244413813781).

202130223312131 is an equidigital number, since it uses as much as digits as its factorization.

202130223312131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244413813780.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 202130223312131 its reverse (131213322031202), we get a palindrome (333343545343333).

The spelling of 202130223312131 in words is "two hundred two trillion, one hundred thirty billion, two hundred twenty-three million, three hundred twelve thousand, one hundred thirty-one".