361641331 has 2 divisors, whose sum is σ = 361641332. Its totient is φ = 361641330.

The previous prime is 361641253. The next prime is 361641337. The reversal of 361641331 is 133146163.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 361641331 - 2⁹ = 361640819 is a prime.

It is a super-2 number, since 2×361641331² = 261568904574903122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 361641331.

It is not a weakly prime, because it can be changed into another prime (361641337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180820665 + 180820666.

It is an arithmetic number, because the mean of its divisors is an integer number (180820666).

Almost surely, 2^361641331 is an apocalyptic number.

361641331 is a deficient number, since it is larger than the sum of its proper divisors (1).

361641331 is an equidigital number, since it uses as much as digits as its factorization.

361641331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 28.

The square root of 361641331 is about 19016.8696425043. The cubic root of 361641331 is about 712.4581403950.

Adding to 361641331 its reverse (133146163), we get a palindrome (494787494).

The spelling of 361641331 in words is "three hundred sixty-one million, six hundred forty-one thousand, three hundred thirty-one".