3856131 has 12 divisors (see below), whose sum is σ = 5597280. Its totient is φ = 2558160.

The previous prime is 3856129. The next prime is 3856133. The reversal of 3856131 is 1316583.

It is an interprime number because it is at equal distance from previous prime (3856129) and next prime (3856133).

It is not a de Polignac number, because 3856131 - 2¹ = 3856129 is a prime.

It is a super-2 number, since 2×3856131² = 29739492578322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3856095 and 3856104.

It is not an unprimeable number, because it can be changed into a prime (3856133) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1126 + ... + 2996.

It is an arithmetic number, because the mean of its divisors is an integer number (466440).

Almost surely, 2^3856131 is an apocalyptic number.

3856131 is a deficient number, since it is larger than the sum of its proper divisors (1741149).

3856131 is a wasteful number, since it uses less digits than its factorization.

3856131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2106 (or 2103 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 3856131 is about 1963.7033890076. The cubic root of 3856131 is about 156.8136726893.

It can be divided in two parts, 38 and 56131, that added together give a square (56169 = 237²).

The spelling of 3856131 in words is "three million, eight hundred fifty-six thousand, one hundred thirty-one".