3191145 has 16 divisors (see below), whose sum is σ = 5375040. Its totient is φ = 1612224.

The previous prime is 3191137. The next prime is 3191161. The reversal of 3191145 is 5411913.

3191145 = 142² + 143² + ... + 231².

It is not a de Polignac number, because 3191145 - 2³ = 3191137 is a prime.

It is a super-2 number, since 2×3191145² = 20366812822050, which contains 22 as substring.

3191145 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5314 + ... + 5883.

It is an arithmetic number, because the mean of its divisors is an integer number (335940).

Almost surely, 2^3191145 is an apocalyptic number.

It is an amenable number.

3191145 is a deficient number, since it is larger than the sum of its proper divisors (2183895).

3191145 is a wasteful number, since it uses less digits than its factorization.

3191145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11224.

The product of its digits is 540, while the sum is 24.

The square root of 3191145 is about 1786.3776196538. The cubic root of 3191145 is about 147.2252089633.

The spelling of 3191145 in words is "three million, one hundred ninety-one thousand, one hundred forty-five".