3870831 has 8 divisors (see below), whose sum is σ = 5385600. Its totient is φ = 2468312.

The previous prime is 3870827. The next prime is 3870847. The reversal of 3870831 is 1380783.

3870831 = 20² + 21² + ... + 226².

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 3870831 - 2² = 3870827 is a prime.

It is a super-4 number, since 4×3870831⁴ (a number of 27 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3870821) 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, 27981 + ... + 28118.

It is an arithmetic number, because the mean of its divisors is an integer number (673200).

Almost surely, 2^3870831 is an apocalyptic number.

3870831 is a deficient number, since it is larger than the sum of its proper divisors (1514769).

3870831 is a wasteful number, since it uses less digits than its factorization.

3870831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56125.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 3870831 is about 1967.4427564735. The cubic root of 3870831 is about 157.0126837360.

The spelling of 3870831 in words is "three million, eight hundred seventy thousand, eight hundred thirty-one".