144352331 has 4 divisors (see below), whose sum is σ = 145781664. Its totient is φ = 142923000.

The previous prime is 144352319. The next prime is 144352363. The reversal of 144352331 is 133253441.

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

It is a cyclic number.

It is not a de Polignac number, because 144352331 - 2¹⁸ = 144090187 is a prime.

It is a super-2 number, since 2×144352331² = 41675190930267122, 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 144352331.

It is not an unprimeable number, because it can be changed into a prime (144352031) 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, 714515 + ... + 714716.

It is an arithmetic number, because the mean of its divisors is an integer number (36445416).

Almost surely, 2^144352331 is an apocalyptic number.

144352331 is a deficient number, since it is larger than the sum of its proper divisors (1429333).

144352331 is a wasteful number, since it uses less digits than its factorization.

144352331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1429332.

The product of its digits is 4320, while the sum is 26.

The square root of 144352331 is about 12014.6714894749. The cubic root of 144352331 is about 524.5754160531.

The spelling of 144352331 in words is "one hundred forty-four million, three hundred fifty-two thousand, three hundred thirty-one".