3920331 has 4 divisors (see below), whose sum is σ = 5227112. Its totient is φ = 2613552.

The previous prime is 3920311. The next prime is 3920359. The reversal of 3920331 is 1330293.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1330293 = 3 ⋅443431.

It is not a de Polignac number, because 3920331 - 2⁵ = 3920299 is a prime.

It is a super-2 number, since 2×3920331² = 30737990299122, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3920298 and 3920307.

It is not an unprimeable number, because it can be changed into a prime (3920311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 653386 + ... + 653391.

It is an arithmetic number, because the mean of its divisors is an integer number (1306778).

Almost surely, 2^3920331 is an apocalyptic number.

3920331 is a deficient number, since it is larger than the sum of its proper divisors (1306781).

3920331 is a wasteful number, since it uses less digits than its factorization.

3920331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1306780.

The product of its (nonzero) digits is 486, while the sum is 21.

The square root of 3920331 is about 1979.9825756809. The cubic root of 3920331 is about 157.6791410902.

The spelling of 3920331 in words is "three million, nine hundred twenty thousand, three hundred thirty-one".