144401331 has 4 divisors (see below), whose sum is σ = 192535112. Its totient is φ = 96267552.

The previous prime is 144401329. The next prime is 144401333. The reversal of 144401331 is 133104441.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (144401329) and next prime (144401333).

It is not a de Polignac number, because 144401331 - 2¹ = 144401329 is a prime.

It is a super-2 number, since 2×144401331² = 41703488789143122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 144401298 and 144401307.

It is not an unprimeable number, because it can be changed into a prime (144401333) 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, 24066886 + ... + 24066891.

It is an arithmetic number, because the mean of its divisors is an integer number (48133778).

Almost surely, 2^144401331 is an apocalyptic number.

144401331 is a deficient number, since it is larger than the sum of its proper divisors (48133781).

144401331 is an equidigital number, since it uses as much as digits as its factorization.

144401331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48133780.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 144401331 is about 12016.7104899802. The cubic root of 144401331 is about 524.6347645636.

Adding to 144401331 its reverse (133104441), we get a palindrome (277505772).

The spelling of 144401331 in words is "one hundred forty-four million, four hundred one thousand, three hundred thirty-one".