144431279 has 2 divisors, whose sum is σ = 144431280. Its totient is φ = 144431278.

The previous prime is 144431257. The next prime is 144431317. The reversal of 144431279 is 972134441.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 144431279 - 2¹² = 144427183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144431219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72215639 + 72215640.

It is an arithmetic number, because the mean of its divisors is an integer number (72215640).

Almost surely, 2^144431279 is an apocalyptic number.

144431279 is a deficient number, since it is larger than the sum of its proper divisors (1).

144431279 is an equidigital number, since it uses as much as digits as its factorization.

144431279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 35.

The square root of 144431279 is about 12017.9565234694. The cubic root of 144431279 is about 524.6710307942.

It can be divided in two parts, 1444 and 31279, that added together give a palindrome (32723).

The spelling of 144431279 in words is "one hundred forty-four million, four hundred thirty-one thousand, two hundred seventy-nine".