3781323 has 64 divisors (see below), whose sum is σ = 7347200. Its totient is φ = 1889568.

The previous prime is 3781313. The next prime is 3781367. The reversal of 3781323 is 3231873.

It is not a de Polignac number, because 3781323 - 2⁹ = 3780811 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

Its product of digits (3024) is a multiple of the sum of its prime divisors (42).

3781323 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3781303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 199008 + ... + 199026.

It is an arithmetic number, because the mean of its divisors is an integer number (114800).

Almost surely, 2^3781323 is an apocalyptic number.

3781323 is a deficient number, since it is larger than the sum of its proper divisors (3565877).

3781323 is an equidigital number, since it uses as much as digits as its factorization.

3781323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60 (or 42 counting only the distinct ones).

The product of its digits is 3024, while the sum is 27.

The square root of 3781323 is about 1944.5624186433. The cubic root of 3781323 is about 155.7929946650.

The spelling of 3781323 in words is "three million, seven hundred eighty-one thousand, three hundred twenty-three".