3951331 has 8 divisors (see below), whose sum is σ = 4154400. Its totient is φ = 3750912.

The previous prime is 3951323. The next prime is 3951347. The reversal of 3951331 is 1331593.

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

It is a cyclic number.

It is not a de Polignac number, because 3951331 - 2³ = 3951323 is a prime.

It is a super-3 number, since 3×3951331³ (a number of 21 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

3951331 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 3951296 and 3951305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3951301) 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, 2851 + ... + 4003.

It is an arithmetic number, because the mean of its divisors is an integer number (519300).

Almost surely, 2^3951331 is an apocalyptic number.

3951331 is a deficient number, since it is larger than the sum of its proper divisors (203069).

3951331 is a wasteful number, since it uses less digits than its factorization.

3951331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1325.

The product of its digits is 1215, while the sum is 25.

The square root of 3951331 is about 1987.7955126220. The cubic root of 3951331 is about 158.0936660874.

The spelling of 3951331 in words is "three million, nine hundred fifty-one thousand, three hundred thirty-one".