3988131 has 24 divisors (see below), whose sum is σ = 6370560. Its totient is φ = 2173776.

The previous prime is 3988129. The next prime is 3988147. The reversal of 3988131 is 1318893.

It is not a de Polignac number, because 3988131 - 2¹ = 3988129 is a prime.

It is a super-2 number, since 2×3988131² = 31810377746322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3988092 and 3988101.

It is not an unprimeable number, because it can be changed into a prime (3988151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10930 + ... + 11288.

It is an arithmetic number, because the mean of its divisors is an integer number (265440).

Almost surely, 2^3988131 is an apocalyptic number.

3988131 is a deficient number, since it is larger than the sum of its proper divisors (2382429).

3988131 is a wasteful number, since it uses less digits than its factorization.

3988131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415 (or 392 counting only the distinct ones).

The product of its digits is 5184, while the sum is 33.

The square root of 3988131 is about 1997.0305455851. The cubic root of 3988131 is about 158.5829424547.

The spelling of 3988131 in words is "three million, nine hundred eighty-eight thousand, one hundred thirty-one".