3151145 has 4 divisors (see below), whose sum is σ = 3781380. Its totient is φ = 2520912.

The previous prime is 3151139. The next prime is 3151153. The reversal of 3151145 is 5411513.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 529984 + 2621161 = 728^2 + 1619^2 .

It is a cyclic number.

It is not a de Polignac number, because 3151145 - 2⁴ = 3151129 is a prime.

It is a super-2 number, since 2×3151145² = 19859429622050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 315110 + ... + 315119.

It is an arithmetic number, because the mean of its divisors is an integer number (945345).

Almost surely, 2^3151145 is an apocalyptic number.

It is an amenable number.

3151145 is a deficient number, since it is larger than the sum of its proper divisors (630235).

3151145 is an equidigital number, since it uses as much as digits as its factorization.

3151145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630234.

The product of its digits is 300, while the sum is 20.

The square root of 3151145 is about 1775.1464728298. The cubic root of 3151145 is about 146.6074801363.

Adding to 3151145 its reverse (5411513), we get a palindrome (8562658).

The spelling of 3151145 in words is "three million, one hundred fifty-one thousand, one hundred forty-five".