23312431140 has 48 divisors (see below), whose sum is σ = 68710326720. Its totient is φ = 5889456000.

The previous prime is 23312431127. The next prime is 23312431169. The reversal of 23312431140 is 4113421332.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 23312431140.

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, 10223611 + ... + 10225890.

It is an arithmetic number, because the mean of its divisors is an integer number (1431465140).

Almost surely, 2^23312431140 is an apocalyptic number.

23312431140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23312431140 is an abundant number, since it is smaller than the sum of its proper divisors (45397895580).

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

23312431140 is a wasteful number, since it uses less digits than its factorization.

23312431140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20449532 (or 20449530 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 23312431140 its reverse (4113421332), we get a palindrome (27425852472).

The spelling of 23312431140 in words is "twenty-three billion, three hundred twelve million, four hundred thirty-one thousand, one hundred forty".