144332431 has 4 divisors (see below), whose sum is σ = 152822592. Its totient is φ = 135842272.

The previous prime is 144332413. The next prime is 144332443. The reversal of 144332431 is 134233441.

144332431 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.

It is a cyclic number.

It is not a de Polignac number, because 144332431 - 2⁵ = 144332399 is a prime.

It is a super-2 number, since 2×144332431² = 41663701276739522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 144332396 and 144332405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144332471) 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, 4245055 + ... + 4245088.

It is an arithmetic number, because the mean of its divisors is an integer number (38205648).

Almost surely, 2^144332431 is an apocalyptic number.

144332431 is a deficient number, since it is larger than the sum of its proper divisors (8490161).

144332431 is an equidigital number, since it uses as much as digits as its factorization.

144332431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8490160.

The product of its digits is 3456, while the sum is 25.

The square root of 144332431 is about 12013.8433067857. The cubic root of 144332431 is about 524.5513094558.

Adding to 144332431 its reverse (134233441), we get a palindrome (278565872).

The spelling of 144332431 in words is "one hundred forty-four million, three hundred thirty-two thousand, four hundred thirty-one".