144432431 has 16 divisors (see below), whose sum is σ = 170354688. Its totient is φ = 120722400.

The previous prime is 144432427. The next prime is 144432437. The reversal of 144432431 is 134234441.

It is a cyclic number.

It is not a de Polignac number, because 144432431 - 2² = 144432427 is a prime.

It is a super-2 number, since 2×144432431² = 41721454249139522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 144432431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144432437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36890 + ... + 40616.

It is an arithmetic number, because the mean of its divisors is an integer number (10647168).

Almost surely, 2^144432431 is an apocalyptic number.

144432431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

144432431 is a deficient number, since it is larger than the sum of its proper divisors (25922257).

144432431 is a wasteful number, since it uses less digits than its factorization.

144432431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4022.

The product of its digits is 4608, while the sum is 26.

The square root of 144432431 is about 12018.0044516550. The cubic root of 144432431 is about 524.6724257354.

Adding to 144432431 its reverse (134234441), we get a palindrome (278666872).

The spelling of 144432431 in words is "one hundred forty-four million, four hundred thirty-two thousand, four hundred thirty-one".