231000244320 has 48 divisors (see below), whose sum is σ = 727650771120. Its totient is φ = 61600065024.

The previous prime is 231000244303. The next prime is 231000244367. The reversal of 231000244320 is 23442000132.

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

It is a super-2 number, since 2×231000244320² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 240624775 + ... + 240625734.

It is an arithmetic number, because the mean of its divisors is an integer number (15159391065).

Almost surely, 2^231000244320 is an apocalyptic number.

231000244320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231000244320 is an abundant number, since it is smaller than the sum of its proper divisors (496650526800).

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

231000244320 is a wasteful number, since it uses less digits than its factorization.

231000244320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481250527 (or 481250519 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 231000244320 its reverse (23442000132), we get a palindrome (254442244452).

The spelling of 231000244320 in words is "two hundred thirty-one billion, two hundred forty-four thousand, three hundred twenty".