3928031 has 4 divisors (see below), whose sum is σ = 4034232. Its totient is φ = 3821832.

The previous prime is 3928027. The next prime is 3928039. The reversal of 3928031 is 1308293.

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 3928031 - 2² = 3928027 is a prime.

It is a super-2 number, since 2×3928031² = 30858855073922, 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 (3928039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53045 + ... + 53118.

It is an arithmetic number, because the mean of its divisors is an integer number (1008558).

Almost surely, 2^3928031 is an apocalyptic number.

3928031 is a deficient number, since it is larger than the sum of its proper divisors (106201).

3928031 is a wasteful number, since it uses less digits than its factorization.

3928031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106200.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 3928031 is about 1981.9260833845. The cubic root of 3928031 is about 157.7823071539.

The spelling of 3928031 in words is "three million, nine hundred twenty-eight thousand, thirty-one".