231294378 has 16 divisors (see below), whose sum is σ = 528672960. Its totient is φ = 66084096.

The previous prime is 231294373. The next prime is 231294419. The reversal of 231294378 is 873492132.

231294378 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 not an unprimeable number, because it can be changed into a prime (231294373) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2753463 + ... + 2753546.

It is an arithmetic number, because the mean of its divisors is an integer number (33042060).

Almost surely, 2^231294378 is an apocalyptic number.

231294378 is an abundant number, since it is smaller than the sum of its proper divisors (297378582).

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

231294378 is a wasteful number, since it uses less digits than its factorization.

231294378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5507021.

The product of its digits is 72576, while the sum is 39.

The square root of 231294378 is about 15208.3653954000. The cubic root of 231294378 is about 613.8397743529.

The spelling of 231294378 in words is "two hundred thirty-one million, two hundred ninety-four thousand, three hundred seventy-eight".