144313331 has 4 divisors (see below), whose sum is σ = 144355464. Its totient is φ = 144271200.

The previous prime is 144313321. The next prime is 144313343. The reversal of 144313331 is 133313441.

144313331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133313441 = 269 ⋅495589.

It is a cyclic number.

It is not a de Polignac number, because 144313331 - 2²² = 140119027 is a prime.

It is a super-3 number, since 3×144313331³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 144313297 and 144313306.

It is not an unprimeable number, because it can be changed into a prime (144313321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15425 + ... + 22946.

It is an arithmetic number, because the mean of its divisors is an integer number (36088866).

Almost surely, 2^144313331 is an apocalyptic number.

144313331 is a deficient number, since it is larger than the sum of its proper divisors (42133).

144313331 is an equidigital number, since it uses as much as digits as its factorization.

144313331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42132.

The product of its digits is 1296, while the sum is 23.

The square root of 144313331 is about 12013.0483641747. The cubic root of 144313331 is about 524.5281698839.

Adding to 144313331 its reverse (133313441), we get a palindrome (277626772).

The spelling of 144313331 in words is "one hundred forty-four million, three hundred thirteen thousand, three hundred thirty-one".