23144145431 has 8 divisors (see below), whose sum is σ = 25253846928. Its totient is φ = 21035392000.

The previous prime is 23144145421. The next prime is 23144145433. The reversal of 23144145431 is 13454144132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23144145431 is a prime.

It is a super-2 number, since 2×23144145431² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23144145433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185480 + ... + 284061.

It is an arithmetic number, because the mean of its divisors is an integer number (3156730866).

Almost surely, 2^23144145431 is an apocalyptic number.

23144145431 is a deficient number, since it is larger than the sum of its proper divisors (2109701497).

23144145431 is a wasteful number, since it uses less digits than its factorization.

23144145431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474033.

The product of its digits is 23040, while the sum is 32.

Adding to 23144145431 its reverse (13454144132), we get a palindrome (36598289563).

The spelling of 23144145431 in words is "twenty-three billion, one hundred forty-four million, one hundred forty-five thousand, four hundred thirty-one".