243351378 has 24 divisors (see below), whose sum is σ = 546790608. Its totient is φ = 81116964.

The previous prime is 243351347. The next prime is 243351397. The reversal of 243351378 is 873153342.

243351378 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 249876 + ... + 250847.

It is an arithmetic number, because the mean of its divisors is an integer number (22782942).

Almost surely, 2^243351378 is an apocalyptic number.

243351378 is an abundant number, since it is smaller than the sum of its proper divisors (303439230).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243351378 is an equidigital number, since it uses as much as digits as its factorization.

243351378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500740 (or 500728 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 243351378 is about 15599.7236513984. The cubic root of 243351378 is about 624.3257821767.

The spelling of 243351378 in words is "two hundred forty-three million, three hundred fifty-one thousand, three hundred seventy-eight".