144613331 has 4 divisors (see below), whose sum is σ = 144643200. Its totient is φ = 144583464.

The previous prime is 144613327. The next prime is 144613361. The reversal of 144613331 is 133316441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133316441 = 23 ⋅5796367.

It is a cyclic number.

It is not a de Polignac number, because 144613331 - 2² = 144613327 is a prime.

It is a super-2 number, since 2×144613331² = 41826031005831122, 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 144613331.

It is not an unprimeable number, because it can be changed into a prime (144613321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5816 + ... + 17973.

It is an arithmetic number, because the mean of its divisors is an integer number (36160800).

Almost surely, 2^144613331 is an apocalyptic number.

144613331 is a deficient number, since it is larger than the sum of its proper divisors (29869).

144613331 is an equidigital number, since it uses as much as digits as its factorization.

144613331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29868.

The product of its digits is 2592, while the sum is 26.

The square root of 144613331 is about 12025.5283044031. The cubic root of 144613331 is about 524.8913831232.

Adding to 144613331 its reverse (133316441), we get a palindrome (277929772).

The spelling of 144613331 in words is "one hundred forty-four million, six hundred thirteen thousand, three hundred thirty-one".