3985131 has 8 divisors (see below), whose sum is σ = 5347984. Its totient is φ = 2639520.

The previous prime is 3985103. The next prime is 3985181. The reversal of 3985131 is 1315893.

It is a happy number.

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

It is not a de Polignac number, because 3985131 - 2⁵ = 3985099 is a prime.

It is a super-2 number, since 2×3985131² = 31762538174322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3985181) 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, 3760 + ... + 4701.

It is an arithmetic number, because the mean of its divisors is an integer number (668498).

Almost surely, 2^3985131 is an apocalyptic number.

3985131 is a deficient number, since it is larger than the sum of its proper divisors (1362853).

3985131 is a wasteful number, since it uses less digits than its factorization.

3985131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8621.

The product of its digits is 3240, while the sum is 30.

The square root of 3985131 is about 1996.2792890776. The cubic root of 3985131 is about 158.5431687555.

The spelling of 3985131 in words is "three million, nine hundred eighty-five thousand, one hundred thirty-one".