144145431 has 24 divisors (see below), whose sum is σ = 221972400. Its totient is φ = 89822976.

The previous prime is 144145427. The next prime is 144145447. The reversal of 144145431 is 134541441.

It is not a de Polignac number, because 144145431 - 2² = 144145427 is a prime.

It is a super-2 number, since 2×144145431² = 41555810556351522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 144145395 and 144145404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144145411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19636 + ... + 25958.

It is an arithmetic number, because the mean of its divisors is an integer number (9248850).

Almost surely, 2^144145431 is an apocalyptic number.

144145431 is a deficient number, since it is larger than the sum of its proper divisors (77826969).

144145431 is a wasteful number, since it uses less digits than its factorization.

144145431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6495 (or 6492 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 144145431 is about 12006.0580958115. The cubic root of 144145431 is about 524.3246718073.

Adding to 144145431 its reverse (134541441), we get a palindrome (278686872).

The spelling of 144145431 in words is "one hundred forty-four million, one hundred forty-five thousand, four hundred thirty-one".