23431444144240 has 160 divisors (see below), whose sum is σ = 62909766374400. Its totient is φ = 8035394626560.

The previous prime is 23431444144201. The next prime is 23431444144261. The reversal of 23431444144240 is 4244144413432.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 23431444144193 and 23431444144202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9578920 + ... + 11773639.

It is an arithmetic number, because the mean of its divisors is an integer number (393186039840).

Almost surely, 2^{23431444144240} is an apocalyptic number.

23431444144240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23431444144240 is an abundant number, since it is smaller than the sum of its proper divisors (39478322230160).

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

23431444144240 is a wasteful number, since it uses less digits than its factorization.

23431444144240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21352655 (or 21352649 counting only the distinct ones).

The product of its (nonzero) digits is 589824, while the sum is 40.

Adding to 23431444144240 its reverse (4244144413432), we get a palindrome (27675588557672).

The spelling of 23431444144240 in words is "twenty-three trillion, four hundred thirty-one billion, four hundred forty-four million, one hundred forty-four thousand, two hundred forty".