201321130131 has 24 divisors (see below), whose sum is σ = 328982681664. Its totient is φ = 122012804520.

The previous prime is 201321130103. The next prime is 201321130177. The reversal of 201321130131 is 131031123102.

201321130131 is a `hidden beast` number, since 201 + 321 + 13 + 0 + 131 = 666.

It is not a de Polignac number, because 201321130131 - 2²³ = 201312741523 is a prime.

It is a super-2 number, since 2×201321130131² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (201321130181) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37655601 + ... + 37660946.

It is an arithmetic number, because the mean of its divisors is an integer number (13707611736).

Almost surely, 2^201321130131 is an apocalyptic number.

201321130131 is a deficient number, since it is larger than the sum of its proper divisors (127661551533).

201321130131 is an equidigital number, since it uses as much as digits as its factorization.

201321130131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75316573 (or 75316561 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 201321130131 its reverse (131031123102), we get a palindrome (332352253233).

The spelling of 201321130131 in words is "two hundred one billion, three hundred twenty-one million, one hundred thirty thousand, one hundred thirty-one".