361331861 has 8 divisors (see below), whose sum is σ = 394335648. Its totient is φ = 328354000.

The previous prime is 361331857. The next prime is 361331869. The reversal of 361331861 is 168133163.

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 361331861 - 2² = 361331857 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (361331869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33326 + ... + 42816.

It is an arithmetic number, because the mean of its divisors is an integer number (49291956).

Almost surely, 2^361331861 is an apocalyptic number.

It is an amenable number.

361331861 is a deficient number, since it is larger than the sum of its proper divisors (33003787).

361331861 is a wasteful number, since it uses less digits than its factorization.

361331861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12963.

The product of its digits is 7776, while the sum is 32.

The square root of 361331861 is about 19008.7311780666. The cubic root of 361331861 is about 712.2548567140.

The spelling of 361331861 in words is "three hundred sixty-one million, three hundred thirty-one thousand, eight hundred sixty-one".