231132378 has 64 divisors (see below), whose sum is σ = 507801600. Its totient is φ = 69854400.

The previous prime is 231132371. The next prime is 231132383. The reversal of 231132378 is 873231132.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (231132371) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 498975 + ... + 499437.

It is an arithmetic number, because the mean of its divisors is an integer number (7934400).

Almost surely, 2^231132378 is an apocalyptic number.

231132378 is an abundant number, since it is smaller than the sum of its proper divisors (276669222).

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

231132378 is a wasteful number, since it uses less digits than its factorization.

231132378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667.

The product of its digits is 6048, while the sum is 30.

The square root of 231132378 is about 15203.0384463107. The cubic root of 231132378 is about 613.6964285008.

The spelling of 231132378 in words is "two hundred thirty-one million, one hundred thirty-two thousand, three hundred seventy-eight".