2231378 has 8 divisors (see below), whose sum is σ = 3378672. Its totient is φ = 1105156.

The previous prime is 2231371. The next prime is 2231381. The reversal of 2231378 is 8731322.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×2231378³ = 33330413024251866456, which contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (2231371) 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 3 ways as a sum of consecutive naturals, for example, 5000 + ... + 5427.

It is an arithmetic number, because the mean of its divisors is an integer number (422334).

2^2231378 is an apocalyptic number.

2231378 is a deficient number, since it is larger than the sum of its proper divisors (1147294).

2231378 is a wasteful number, since it uses less digits than its factorization.

2231378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10536.

The product of its digits is 2016, while the sum is 26.

The square root of 2231378 is about 1493.7797695778. The cubic root of 2231378 is about 130.6745607591.

The spelling of 2231378 in words is "two million, two hundred thirty-one thousand, three hundred seventy-eight".