3831157 has 4 divisors (see below), whose sum is σ = 4179456. Its totient is φ = 3482860.

The previous prime is 3831131. The next prime is 3831167. The reversal of 3831157 is 7511383.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3831157 - 2¹⁹ = 3306869 is a prime.

It is a Duffinian number.

3831157 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3831167) 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, 174133 + ... + 174154.

It is an arithmetic number, because the mean of its divisors is an integer number (1044864).

Almost surely, 2^3831157 is an apocalyptic number.

It is an amenable number.

3831157 is a deficient number, since it is larger than the sum of its proper divisors (348299).

3831157 is a wasteful number, since it uses less digits than its factorization.

3831157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348298.

The product of its digits is 2520, while the sum is 28.

The square root of 3831157 is about 1957.3341564485. The cubic root of 3831157 is about 156.4744077890.

It can be divided in two parts, 383 and 1157, that added together give a triangular number (1540 = T₅₅).

The spelling of 3831157 in words is "three million, eight hundred thirty-one thousand, one hundred fifty-seven".