3821431 has 4 divisors (see below), whose sum is σ = 3856600. Its totient is φ = 3786264.

The previous prime is 3821423. The next prime is 3821437. The reversal of 3821431 is 1341283.

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 3821431 - 2³ = 3821423 is a prime.

It is a super-2 number, since 2×3821431² = 29206669775522, 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 (3821437) 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, 17421 + ... + 17638.

It is an arithmetic number, because the mean of its divisors is an integer number (964150).

Almost surely, 2^3821431 is an apocalyptic number.

3821431 is a deficient number, since it is larger than the sum of its proper divisors (35169).

3821431 is a wasteful number, since it uses less digits than its factorization.

3821431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35168.

The product of its digits is 576, while the sum is 22.

The square root of 3821431 is about 1954.8480759384. The cubic root of 3821431 is about 156.3418838765.

The spelling of 3821431 in words is "three million, eight hundred twenty-one thousand, four hundred thirty-one".