3081218152 has 8 divisors (see below), whose sum is σ = 5777284050. Its totient is φ = 1540609072.

The previous prime is 3081218149. The next prime is 3081218197. The reversal of 3081218152 is 2518121803.

It can be written as a sum of positive squares in only one way, i.e., 2663179236 + 418038916 = 51606^2 + 20446^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192576127 + ... + 192576142.

Almost surely, 2^3081218152 is an apocalyptic number.

It is an amenable number.

3081218152 is a deficient number, since it is larger than the sum of its proper divisors (2696065898).

3081218152 is a wasteful number, since it uses less digits than its factorization.

3081218152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385152275 (or 385152271 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 31.

The square root of 3081218152 is about 55508.7214048387. The cubic root of 3081218152 is about 1455.1490582324.

Adding to 3081218152 its reverse (2518121803), we get a palindrome (5599339955).

The spelling of 3081218152 in words is "three billion, eighty-one million, two hundred eighteen thousand, one hundred fifty-two".