144013331 has 32 divisors (see below), whose sum is σ = 190425600. Its totient is φ = 105511680.

The previous prime is 144013297. The next prime is 144013379. The reversal of 144013331 is 133310441.

It is a cyclic number.

It is not a de Polignac number, because 144013331 - 2⁶ = 144013267 is a prime.

It is a super-2 number, since 2×144013331² = 41479679011431122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (144013231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 252815 + ... + 253383.

It is an arithmetic number, because the mean of its divisors is an integer number (5950800).

Almost surely, 2^144013331 is an apocalyptic number.

144013331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

144013331 is a deficient number, since it is larger than the sum of its proper divisors (46412269).

144013331 is a wasteful number, since it uses less digits than its factorization.

144013331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 779.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 144013331 is about 12000.5554454783. Note that the first 3 decimals coincide. The cubic root of 144013331 is about 524.1644529276.

Adding to 144013331 its reverse (133310441), we get a palindrome (277323772).

The spelling of 144013331 in words is "one hundred forty-four million, thirteen thousand, three hundred thirty-one".