3141991 has 4 divisors (see below), whose sum is σ = 3326832. Its totient is φ = 2957152.

The previous prime is 3141959. The next prime is 3142019. The reversal of 3141991 is 1991413.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 3141991 - 2⁵ = 3141959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3141911) 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, 92395 + ... + 92428.

It is an arithmetic number, because the mean of its divisors is an integer number (831708).

Almost surely, 2^3141991 is an apocalyptic number.

3141991 is a deficient number, since it is larger than the sum of its proper divisors (184841).

3141991 is a wasteful number, since it uses less digits than its factorization.

3141991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184840.

The product of its digits is 972, while the sum is 28.

The square root of 3141991 is about 1772.5662187913. The cubic root of 3141991 is about 146.4653787191.

The spelling of 3141991 in words is "three million, one hundred forty-one thousand, nine hundred ninety-one".