3131887 has 8 divisors (see below), whose sum is σ = 3565440. Its totient is φ = 2723160.

The previous prime is 3131879. The next prime is 3131911. The reversal of 3131887 is 7881313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3131887 - 2³ = 3131879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3131857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5937 + ... + 6442.

It is an arithmetic number, because the mean of its divisors is an integer number (445680).

Almost surely, 2^3131887 is an apocalyptic number.

3131887 is a deficient number, since it is larger than the sum of its proper divisors (433553).

3131887 is a wasteful number, since it uses less digits than its factorization.

3131887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12413.

The product of its digits is 4032, while the sum is 31.

The square root of 3131887 is about 1769.7138186724. The cubic root of 3131887 is about 146.3082092297.

The spelling of 3131887 in words is "three million, one hundred thirty-one thousand, eight hundred eighty-seven".