3281157 has 36 divisors (see below), whose sum is σ = 5477472. Its totient is φ = 1887600.

The previous prime is 3281149. The next prime is 3281171. The reversal of 3281157 is 7511823.

It is not a de Polignac number, because 3281157 - 2³ = 3281149 is a prime.

Its product of digits (1680) is a multiple of the sum of its prime divisors (168).

3281157 is a lucky number.

It is a plaindrome in base 12.

It is a zygodrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 3281157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3281137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 24982 + ... + 25112.

It is an arithmetic number, because the mean of its divisors is an integer number (152152).

Almost surely, 2^3281157 is an apocalyptic number.

It is an amenable number.

3281157 is a deficient number, since it is larger than the sum of its proper divisors (2196315).

3281157 is a wasteful number, since it uses less digits than its factorization.

3281157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182 (or 168 counting only the distinct ones).

The product of its digits is 1680, while the sum is 27.

The square root of 3281157 is about 1811.3964226530. The cubic root of 3281157 is about 148.5966449081.

It can be divided in two parts, 328 and 1157, that added together give a triangular number (1485 = T₅₄).

The spelling of 3281157 in words is "three million, two hundred eighty-one thousand, one hundred fifty-seven".