3187145 has 8 divisors (see below), whose sum is σ = 4118856. Its totient is φ = 2353536.

The previous prime is 3187127. The next prime is 3187147. The reversal of 3187145 is 5417813.

It can be written as a sum of positive squares in 4 ways, for example, as 4489 + 3182656 = 67^2 + 1784^2 .

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 3187145 - 2¹⁶ = 3121609 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3187147) 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, 24452 + ... + 24581.

It is an arithmetic number, because the mean of its divisors is an integer number (514857).

Almost surely, 2^3187145 is an apocalyptic number.

It is an amenable number.

3187145 is a deficient number, since it is larger than the sum of its proper divisors (931711).

3187145 is a wasteful number, since it uses less digits than its factorization.

3187145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49051.

The product of its digits is 3360, while the sum is 29.

The square root of 3187145 is about 1785.2576844814. The cubic root of 3187145 is about 147.1636691854.

The spelling of 3187145 in words is "three million, one hundred eighty-seven thousand, one hundred forty-five".