3151091 has 4 divisors (see below), whose sum is σ = 3154800. Its totient is φ = 3147384.

The previous prime is 3151067. The next prime is 3151097. The reversal of 3151091 is 1901513.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1901513 = 233 ⋅8161.

It is a cyclic number.

It is not a de Polignac number, because 3151091 - 2¹⁴ = 3134707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3151097) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125 + ... + 2513.

It is an arithmetic number, because the mean of its divisors is an integer number (788700).

Almost surely, 2^3151091 is an apocalyptic number.

3151091 is a deficient number, since it is larger than the sum of its proper divisors (3709).

3151091 is a wasteful number, since it uses less digits than its factorization.

3151091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3708.

The product of its (nonzero) digits is 135, while the sum is 20.

The square root of 3151091 is about 1775.1312627521. The cubic root of 3151091 is about 146.6066426789.

The spelling of 3151091 in words is "three million, one hundred fifty-one thousand, ninety-one".