144722431 has 12 divisors (see below), whose sum is σ = 168645672. Its totient is φ = 123830448.

The previous prime is 144722363. The next prime is 144722437. The reversal of 144722431 is 134227441.

144722431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 144722431 - 2²⁵ = 111167999 is a prime.

It is a super-2 number, since 2×144722431² = 41889164069099522, 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 144722431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144722437) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29736 + ... + 34258.

It is an arithmetic number, because the mean of its divisors is an integer number (14053806).

Almost surely, 2^144722431 is an apocalyptic number.

144722431 is a deficient number, since it is larger than the sum of its proper divisors (23923241).

144722431 is an equidigital number, since it uses as much as digits as its factorization.

144722431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5190 (or 5183 counting only the distinct ones).

The product of its digits is 5376, while the sum is 28.

The square root of 144722431 is about 12030.0636324169. The cubic root of 144722431 is about 525.0233471099.

Adding to 144722431 its reverse (134227441), we get a palindrome (278949872).

The spelling of 144722431 in words is "one hundred forty-four million, seven hundred twenty-two thousand, four hundred thirty-one".