3189631 has 4 divisors (see below), whose sum is σ = 3201264. Its totient is φ = 3178000.

The previous prime is 3189619. The next prime is 3189647. The reversal of 3189631 is 1369813.

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 3189631 - 2⁷ = 3189503 is a prime.

It is a super-2 number, since 2×3189631² = 20347491832322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3189593 and 3189602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3189331) 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, 5395 + ... + 5956.

It is an arithmetic number, because the mean of its divisors is an integer number (800316).

Almost surely, 2^3189631 is an apocalyptic number.

3189631 is a deficient number, since it is larger than the sum of its proper divisors (11633).

3189631 is a wasteful number, since it uses less digits than its factorization.

3189631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11632.

The product of its digits is 3888, while the sum is 31.

The square root of 3189631 is about 1785.9538067934. The cubic root of 3189631 is about 147.2019222093.

The spelling of 3189631 in words is "three million, one hundred eighty-nine thousand, six hundred thirty-one".