23144431450420 has 48 divisors (see below), whose sum is σ = 55834441947648. Its totient is φ = 7894118430720.

The previous prime is 23144431450409. The next prime is 23144431450423. The reversal of 23144431450420 is 2405413444132.

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 23144431450420.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23144431450423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 428256316 + ... + 428310355.

It is an arithmetic number, because the mean of its divisors is an integer number (1163217540576).

Almost surely, 2^{23144431450420} is an apocalyptic number.

23144431450420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23144431450420 is an abundant number, since it is smaller than the sum of its proper divisors (32690010497228).

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

23144431450420 is a wasteful number, since it uses less digits than its factorization.

23144431450420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856566880 (or 856566878 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 37.

Adding to 23144431450420 its reverse (2405413444132), we get a palindrome (25549844894552).

The spelling of 23144431450420 in words is "twenty-three trillion, one hundred forty-four billion, four hundred thirty-one million, four hundred fifty thousand, four hundred twenty".