231462378 has 144 divisors (see below), whose sum is σ = 633821760. Its totient is φ = 60625152.

The previous prime is 231462377. The next prime is 231462397. The reversal of 231462378 is 873264132.

It is a happy number.

231462378 is a `hidden beast` number, since 23 + 1 + 4 + 623 + 7 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (231462373) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 644563 + ... + 644921.

It is an arithmetic number, because the mean of its divisors is an integer number (4401540).

Almost surely, 2^231462378 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231462378, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (316910880).

231462378 is an abundant number, since it is smaller than the sum of its proper divisors (402359382).

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

231462378 is a wasteful number, since it uses less digits than its factorization.

231462378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441 (or 431 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 231462378 is about 15213.8876688373. The cubic root of 231462378 is about 613.9883586301.

The spelling of 231462378 in words is "two hundred thirty-one million, four hundred sixty-two thousand, three hundred seventy-eight".