3145631 has 4 divisors (see below), whose sum is σ = 3174600. Its totient is φ = 3116664.

The previous prime is 3145627. The next prime is 3145633. The reversal of 3145631 is 1365413.

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 3145631 - 2² = 3145627 is a prime.

It is a super-2 number, since 2×3145631² = 19789988776322, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3145597 and 3145606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3145633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14321 + ... + 14538.

It is an arithmetic number, because the mean of its divisors is an integer number (793650).

Almost surely, 2^3145631 is an apocalyptic number.

3145631 is a deficient number, since it is larger than the sum of its proper divisors (28969).

3145631 is a wasteful number, since it uses less digits than its factorization.

3145631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28968.

The product of its digits is 1080, while the sum is 23.

The square root of 3145631 is about 1773.5926815365. The cubic root of 3145631 is about 146.5219169918.

The spelling of 3145631 in words is "three million, one hundred forty-five thousand, six hundred thirty-one".