231440334 has 8 divisors (see below), whose sum is σ = 462880680. Its totient is φ = 77146776.

The previous prime is 231440309. The next prime is 231440353. The reversal of 231440334 is 433044132.

It is a sphenic number, since it is the product of 3 distinct primes.

231440334 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19286689 + ... + 19286700.

It is an arithmetic number, because the mean of its divisors is an integer number (57860085).

Almost surely, 2^231440334 is an apocalyptic number.

231440334 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

231440334 is a wasteful number, since it uses less digits than its factorization.

231440334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38573394.

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 231440334 is about 15213.1631819290. The cubic root of 231440334 is about 613.9688663492.

Adding to 231440334 its reverse (433044132), we get a palindrome (664484466).

The spelling of 231440334 in words is "two hundred thirty-one million, four hundred forty thousand, three hundred thirty-four".