144121331 has 2 divisors, whose sum is σ = 144121332. Its totient is φ = 144121330.

The previous prime is 144121321. The next prime is 144121357. The reversal of 144121331 is 133121441.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 144121331 - 2¹⁰ = 144120307 is a prime.

It is a super-2 number, since 2×144121331² = 41541916098423122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (144121321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72060665 + 72060666.

It is an arithmetic number, because the mean of its divisors is an integer number (72060666).

Almost surely, 2^144121331 is an apocalyptic number.

144121331 is a deficient number, since it is larger than the sum of its proper divisors (1).

144121331 is an equidigital number, since it uses as much as digits as its factorization.

144121331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288, while the sum is 20.

The square root of 144121331 is about 12005.0543938793. The cubic root of 144121331 is about 524.2954491701.

Adding to 144121331 its reverse (133121441), we get a palindrome (277242772).

The spelling of 144121331 in words is "one hundred forty-four million, one hundred twenty-one thousand, three hundred thirty-one".