3181145 has 8 divisors (see below), whose sum is σ = 4164480. Its totient is φ = 2313520.

The previous prime is 3181111. The next prime is 3181163. The reversal of 3181145 is 5411813.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3181145 - 2⁶ = 3181081 is a prime.

It is a super-2 number, since 2×3181145² = 20239367022050, 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 3181145.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28865 + ... + 28974.

It is an arithmetic number, because the mean of its divisors is an integer number (520560).

Almost surely, 2^3181145 is an apocalyptic number.

It is an amenable number.

3181145 is a deficient number, since it is larger than the sum of its proper divisors (983335).

3181145 is a wasteful number, since it uses less digits than its factorization.

3181145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57855.

The product of its digits is 480, while the sum is 23.

The square root of 3181145 is about 1783.5764631773. The cubic root of 3181145 is about 147.0712629007.

Adding to 3181145 its reverse (5411813), we get a palindrome (8592958).

The spelling of 3181145 in words is "three million, one hundred eighty-one thousand, one hundred forty-five".