3151409 has 8 divisors (see below), whose sum is σ = 3357288. Its totient is φ = 2947840.

The previous prime is 3151403. The next prime is 3151417. The reversal of 3151409 is 9041513.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2002225 + 1149184 = 1415^2 + 1072^2 .

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 3151409 - 2⁸ = 3151153 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3151403) 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, 2879 + ... + 3819.

It is an arithmetic number, because the mean of its divisors is an integer number (419661).

Almost surely, 2^3151409 is an apocalyptic number.

It is an amenable number.

3151409 is a deficient number, since it is larger than the sum of its proper divisors (205879).

3151409 is a wasteful number, since it uses less digits than its factorization.

3151409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1155.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 3151409 is about 1775.2208313334. The cubic root of 3151409 is about 146.6115742347.

The spelling of 3151409 in words is "three million, one hundred fifty-one thousand, four hundred nine".