23440431432220 has 72 divisors (see below), whose sum is σ = 54107838262800. Its totient is φ = 8523616273920.

The previous prime is 23440431432179. The next prime is 23440431432259. The reversal of 23440431432220 is 2223413404432.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 193391796 + ... + 193512964.

It is an arithmetic number, because the mean of its divisors is an integer number (751497753650).

Almost surely, 2^{23440431432220} is an apocalyptic number.

23440431432220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23440431432220 is an abundant number, since it is smaller than the sum of its proper divisors (30667406830580).

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

23440431432220 is a wasteful number, since it uses less digits than its factorization.

23440431432220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201139 (or 201126 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 34.

Adding to 23440431432220 its reverse (2223413404432), we get a palindrome (25663844836652).

The spelling of 23440431432220 in words is "twenty-three trillion, four hundred forty billion, four hundred thirty-one million, four hundred thirty-two thousand, two hundred twenty".