3913731 has 16 divisors (see below), whose sum is σ = 5934720. Its totient is φ = 2547720.

The previous prime is 3913727. The next prime is 3913747. The reversal of 3913731 is 1373193.

3913731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3913731 - 2² = 3913727 is a prime.

It is a super-2 number, since 2×3913731² = 30634580680722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 3913695 and 3913704.

It is not an unprimeable number, because it can be changed into a prime (3913771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 525 + ... + 2846.

It is an arithmetic number, because the mean of its divisors is an integer number (370920).

Almost surely, 2^3913731 is an apocalyptic number.

3913731 is a deficient number, since it is larger than the sum of its proper divisors (2020989).

3913731 is a wasteful number, since it uses less digits than its factorization.

3913731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3423 (or 3417 counting only the distinct ones).

The product of its digits is 1701, while the sum is 27.

The square root of 3913731 is about 1978.3151922785. The cubic root of 3913731 is about 157.5906054635.

The spelling of 3913731 in words is "three million, nine hundred thirteen thousand, seven hundred thirty-one".