231567456 has 48 divisors (see below), whose sum is σ = 611982000. Its totient is φ = 76666368.

The previous prime is 231567439. The next prime is 231567481. The reversal of 231567456 is 654765132.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6210 + ... + 22398.

It is an arithmetic number, because the mean of its divisors is an integer number (12749625).

Almost surely, 2^231567456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231567456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (305991000).

231567456 is an abundant number, since it is smaller than the sum of its proper divisors (380414544).

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

231567456 is a wasteful number, since it uses less digits than its factorization.

231567456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16351 (or 16343 counting only the distinct ones).

The product of its digits is 151200, while the sum is 39.

The square root of 231567456 is about 15217.3406349467. The cubic root of 231567456 is about 614.0812562446.

It can be divided in two parts, 231 and 567456, that multiplied together give a triangular number (131082336 = T₁₆₁₉₁).

The spelling of 231567456 in words is "two hundred thirty-one million, five hundred sixty-seven thousand, four hundred fifty-six".