144211231 has 2 divisors, whose sum is σ = 144211232. Its totient is φ = 144211230.

The previous prime is 144211217. The next prime is 144211241. The reversal of 144211231 is 132112441.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144211231 is a prime.

It is a super-2 number, since 2×144211231² = 41593758293070722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 144211199 and 144211208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144211211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72105615 + 72105616.

It is an arithmetic number, because the mean of its divisors is an integer number (72105616).

Almost surely, 2^144211231 is an apocalyptic number.

144211231 is a deficient number, since it is larger than the sum of its proper divisors (1).

144211231 is an equidigital number, since it uses as much as digits as its factorization.

144211231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 192, while the sum is 19.

The square root of 144211231 is about 12008.7980664178. The cubic root of 144211231 is about 524.4044415113.

Adding to 144211231 its reverse (132112441), we get a palindrome (276323672).

The spelling of 144211231 in words is "one hundred forty-four million, two hundred eleven thousand, two hundred thirty-one".