36331181 has 2 divisors, whose sum is σ = 36331182. Its totient is φ = 36331180.

The previous prime is 36331153. The next prime is 36331189. The reversal of 36331181 is 18113363.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35581225 + 749956 = 5965^2 + 866^2 .

It is a cyclic number.

It is not a de Polignac number, because 36331181 - 2¹⁰ = 36330157 is a prime.

It is a super-2 number, since 2×36331181² = 2639909425709522, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 36331181.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36331189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18165590 + 18165591.

It is an arithmetic number, because the mean of its divisors is an integer number (18165591).

Almost surely, 2^36331181 is an apocalyptic number.

It is an amenable number.

36331181 is a deficient number, since it is larger than the sum of its proper divisors (1).

36331181 is an equidigital number, since it uses as much as digits as its factorization.

36331181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 26.

The square root of 36331181 is about 6027.5352342396. The cubic root of 36331181 is about 331.2021686722.

The spelling of 36331181 in words is "thirty-six million, three hundred thirty-one thousand, one hundred eighty-one".