201111432131 has 16 divisors (see below), whose sum is σ = 214990568064. Its totient is φ = 187462539264.

The previous prime is 201111432113. The next prime is 201111432133. The reversal of 201111432131 is 131234111102.

It is a de Polignac number, because none of the positive numbers 2^k-201111432131 is a prime.

It is a super-2 number, since 2×201111432131² (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 (201111432133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2509721 + ... + 2588613.

It is an arithmetic number, because the mean of its divisors is an integer number (13436910504).

Almost surely, 2^201111432131 is an apocalyptic number.

201111432131 is a deficient number, since it is larger than the sum of its proper divisors (13879135933).

201111432131 is a wasteful number, since it uses less digits than its factorization.

201111432131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80350.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 201111432131 its reverse (131234111102), we get a palindrome (332345543233).

The spelling of 201111432131 in words is "two hundred one billion, one hundred eleven million, four hundred thirty-two thousand, one hundred thirty-one".