201111440131 has 4 divisors (see below), whose sum is σ = 229841645872. Its totient is φ = 172381234392.

The previous prime is 201111440119. The next prime is 201111440161. The reversal of 201111440131 is 131044111102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 131044111102 = 2 ⋅65522055551.

It is a cyclic number.

It is not a de Polignac number, because 201111440131 - 2¹¹ = 201111438083 is a prime.

It is a super-2 number, since 2×201111440131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201111440099 and 201111440108.

It is not an unprimeable number, because it can be changed into a prime (201111440161) 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, 14365102860 + ... + 14365102873.

It is an arithmetic number, because the mean of its divisors is an integer number (57460411468).

Almost surely, 2^201111440131 is an apocalyptic number.

201111440131 is a deficient number, since it is larger than the sum of its proper divisors (28730205741).

201111440131 is an equidigital number, since it uses as much as digits as its factorization.

201111440131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28730205740.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 201111440131 its reverse (131044111102), we get a palindrome (332155551233).

The spelling of 201111440131 in words is "two hundred one billion, one hundred eleven million, four hundred forty thousand, one hundred thirty-one".