361831086 has 48 divisors (see below), whose sum is σ = 819149760. Its totient is φ = 115281600.

The previous prime is 361831081. The next prime is 361831087. The reversal of 361831086 is 680138163.

361831086 is a `hidden beast` number, since 3 + 618 + 31 + 0 + 8 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 361831086.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (361831081) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49291 + ... + 56153.

It is an arithmetic number, because the mean of its divisors is an integer number (17065620).

Almost surely, 2^361831086 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 361831086, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (409574880).

361831086 is an abundant number, since it is smaller than the sum of its proper divisors (457318674).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

361831086 is a wasteful number, since it uses less digits than its factorization.

361831086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7001 (or 6998 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 361831086 is about 19021.8581111310. The cubic root of 361831086 is about 712.5827287134.

The spelling of 361831086 in words is "three hundred sixty-one million, eight hundred thirty-one thousand, eighty-six".