144564431 has 8 divisors (see below), whose sum is σ = 159269328. Its totient is φ = 130120000.

The previous prime is 144564421. The next prime is 144564437. The reversal of 144564431 is 134465441.

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

It is a cyclic number.

It is not a de Polignac number, because 144564431 - 2⁶ = 144564367 is a prime.

It is a super-2 number, since 2×144564431² = 41797749420707522, which 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 (144564437) 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, 63950 + ... + 66171.

It is an arithmetic number, because the mean of its divisors is an integer number (19908666).

Almost surely, 2^144564431 is an apocalyptic number.

144564431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

144564431 is a deficient number, since it is larger than the sum of its proper divisors (14704897).

144564431 is a wasteful number, since it uses less digits than its factorization.

144564431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130233.

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

The square root of 144564431 is about 12023.4949577899. The cubic root of 144564431 is about 524.8322136537.

The spelling of 144564431 in words is "one hundred forty-four million, five hundred sixty-four thousand, four hundred thirty-one".