231425478 has 32 divisors (see below), whose sum is σ = 530872320. Its totient is φ = 74652840.

The previous prime is 231425473. The next prime is 231425483. The reversal of 231425478 is 874524132.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (231425473) and next prime (231425483).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231425473) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67450 + ... + 70797.

It is an arithmetic number, because the mean of its divisors is an integer number (16589760).

Almost surely, 2^231425478 is an apocalyptic number.

231425478 is an abundant number, since it is smaller than the sum of its proper divisors (299446842).

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

231425478 is a wasteful number, since it uses less digits than its factorization.

231425478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138289 (or 138283 counting only the distinct ones).

The product of its digits is 53760, while the sum is 36.

The square root of 231425478 is about 15212.6749127167. The cubic root of 231425478 is about 613.9557293181.

The spelling of 231425478 in words is "two hundred thirty-one million, four hundred twenty-five thousand, four hundred seventy-eight".