202130400131 has 4 divisors (see below), whose sum is σ = 220505891064. Its totient is φ = 183754909200.

The previous prime is 202130400127. The next prime is 202130400179. The reversal of 202130400131 is 131004031202.

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 202130400131 - 2² = 202130400127 is a prime.

It is a super-2 number, since 2×202130400131² (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 (202130400631) 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, 9187745450 + ... + 9187745471.

It is an arithmetic number, because the mean of its divisors is an integer number (55126472766).

Almost surely, 2^202130400131 is an apocalyptic number.

202130400131 is a deficient number, since it is larger than the sum of its proper divisors (18375490933).

202130400131 is a wasteful number, since it uses less digits than its factorization.

202130400131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18375490932.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 202130400131 its reverse (131004031202), we get a palindrome (333134431333).

The spelling of 202130400131 in words is "two hundred two billion, one hundred thirty million, four hundred thousand, one hundred thirty-one".