3145831 has 8 divisors (see below), whose sum is σ = 3444224. Its totient is φ = 2855520.

The previous prime is 3145823. The next prime is 3145841. The reversal of 3145831 is 1385413.

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 3145831 - 2³ = 3145823 is a prime.

It is a super-2 number, since 2×3145831² = 19792505361122, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 3145796 and 3145805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3145801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1191 + ... + 2776.

It is an arithmetic number, because the mean of its divisors is an integer number (430528).

Almost surely, 2^3145831 is an apocalyptic number.

3145831 is a deficient number, since it is larger than the sum of its proper divisors (298393).

3145831 is a wasteful number, since it uses less digits than its factorization.

3145831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4041.

The product of its digits is 1440, while the sum is 25.

The square root of 3145831 is about 1773.6490633719. The cubic root of 3145831 is about 146.5250222260.

The spelling of 3145831 in words is "three million, one hundred forty-five thousand, eight hundred thirty-one".