231403244320 has 96 divisors (see below), whose sum is σ = 552868872192. Its totient is φ = 91518016512.

The previous prime is 231403244311. The next prime is 231403244383. The reversal of 231403244320 is 23442304132.

It is a super-2 number, since 2×231403244320² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10750689 + ... + 10772191.

It is an arithmetic number, because the mean of its divisors is an integer number (5759050752).

Almost surely, 2^231403244320 is an apocalyptic number.

231403244320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231403244320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (276434436096).

231403244320 is an abundant number, since it is smaller than the sum of its proper divisors (321465627872).

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

231403244320 is a wasteful number, since it uses less digits than its factorization.

231403244320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22274 (or 22266 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 231403244320 its reverse (23442304132), we get a palindrome (254845548452).

The spelling of 231403244320 in words is "two hundred thirty-one billion, four hundred three million, two hundred forty-four thousand, three hundred twenty".