144005431 has 4 divisors (see below), whose sum is σ = 144035200. Its totient is φ = 143975664.

The previous prime is 144005423. The next prime is 144005441. The reversal of 144005431 is 134500441.

144005431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134500441 = 109 ⋅1233949.

It is a cyclic number.

It is not a de Polignac number, because 144005431 - 2³ = 144005423 is a prime.

It is a super-2 number, since 2×144005431² = 41475128314991522, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144005401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5766 + ... + 17923.

It is an arithmetic number, because the mean of its divisors is an integer number (36008800).

Almost surely, 2^144005431 is an apocalyptic number.

144005431 is a deficient number, since it is larger than the sum of its proper divisors (29769).

144005431 is an equidigital number, since it uses as much as digits as its factorization.

144005431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29768.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 144005431 is about 12000.2262895330. The cubic root of 144005431 is about 524.1548682249.

Adding to 144005431 its reverse (134500441), we get a palindrome (278505872).

The spelling of 144005431 in words is "one hundred forty-four million, five thousand, four hundred thirty-one".