3661131131 has 8 divisors (see below), whose sum is σ = 4222537440. Its totient is φ = 3109321728.

The previous prime is 3661131127. The next prime is 3661131151. The reversal of 3661131131 is 1311311663.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3661131131 - 2² = 3661131127 is a prime.

It is a super-2 number, since 2×3661131131² = 26807762316754678322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3661131131.

It is not an unprimeable number, because it can be changed into a prime (3661131151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2398406 + ... + 2399931.

It is an arithmetic number, because the mean of its divisors is an integer number (527817180).

Almost surely, 2^3661131131 is an apocalyptic number.

3661131131 is a deficient number, since it is larger than the sum of its proper divisors (561406309).

3661131131 is a wasteful number, since it uses less digits than its factorization.

3661131131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4798453.

The product of its digits is 972, while the sum is 26.

The square root of 3661131131 is about 60507.2816361800. The cubic root of 3661131131 is about 1541.2452865375.

Adding to 3661131131 its reverse (1311311663), we get a palindrome (4972442794).

The spelling of 3661131131 in words is "three billion, six hundred sixty-one million, one hundred thirty-one thousand, one hundred thirty-one".