4131161 has 4 divisors (see below), whose sum is σ = 4242852. Its totient is φ = 4019472.

The previous prime is 4131109. The next prime is 4131223. The reversal of 4131161 is 1611314.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2785561 + 1345600 = 1669^2 + 1160^2 .

It is a cyclic number.

It is not a de Polignac number, because 4131161 - 2⁶ = 4131097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4131661) 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, 55790 + ... + 55863.

It is an arithmetic number, because the mean of its divisors is an integer number (1060713).

Almost surely, 2^4131161 is an apocalyptic number.

It is an amenable number.

4131161 is a deficient number, since it is larger than the sum of its proper divisors (111691).

4131161 is a wasteful number, since it uses less digits than its factorization.

4131161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111690.

The product of its digits is 72, while the sum is 17.

The square root of 4131161 is about 2032.5257685943. The cubic root of 4131161 is about 160.4565217065.

Adding to 4131161 its reverse (1611314), we get a palindrome (5742475).

It can be divided in two parts, 41 and 31161, that multiplied together give a triangular number (1277601 = T₁₅₉₈).

The spelling of 4131161 in words is "four million, one hundred thirty-one thousand, one hundred sixty-one".