361506331 has 4 divisors (see below), whose sum is σ = 380533000. Its totient is φ = 342479664.

The previous prime is 361506319. The next prime is 361506347. The reversal of 361506331 is 133605163.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133605163 = 227 ⋅588569.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-361506331 is a prime.

It is a super-2 number, since 2×361506331² = 261373654706163122, 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 361506331.

It is not an unprimeable number, because it can be changed into a prime (361506311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9513306 + ... + 9513343.

It is an arithmetic number, because the mean of its divisors is an integer number (95133250).

Almost surely, 2^361506331 is an apocalyptic number.

361506331 is a deficient number, since it is larger than the sum of its proper divisors (19026669).

361506331 is a wasteful number, since it uses less digits than its factorization.

361506331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19026668.

The product of its (nonzero) digits is 4860, while the sum is 28.

The square root of 361506331 is about 19013.3198311079. The cubic root of 361506331 is about 712.3694762856.

The spelling of 361506331 in words is "three hundred sixty-one million, five hundred six thousand, three hundred thirty-one".