3181325 has 30 divisors (see below), whose sum is σ = 4688874. Its totient is φ = 2140320.

The previous prime is 3181301. The next prime is 3181327. The reversal of 3181325 is 5231813.

It can be written as a sum of positive squares in 3 ways, for example, as 405769 + 2775556 = 637^2 + 1666^2 .

It is not a de Polignac number, because 3181325 - 2⁸ = 3181069 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3181325.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3181327) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 59999 + ... + 60051.

Almost surely, 2^3181325 is an apocalyptic number.

3181325 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3181325 is a deficient number, since it is larger than the sum of its proper divisors (1507549).

3181325 is an frugal number, since it uses more digits than its factorization.

3181325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91 (or 65 counting only the distinct ones).

The product of its digits is 720, while the sum is 23.

The square root of 3181325 is about 1783.6269228737. The cubic root of 3181325 is about 147.0740367791.

The spelling of 3181325 in words is "three million, one hundred eighty-one thousand, three hundred twenty-five".