144021332331 has 24 divisors (see below), whose sum is σ = 215586755280. Its totient is φ = 92538632256.

The previous prime is 144021332321. The next prime is 144021332381. The reversal of 144021332331 is 133233120441.

It is a happy number.

144021332331 is a `hidden beast` number, since 1 + 440 + 213 + 3 + 2 + 3 + 3 + 1 = 666.

It is not a de Polignac number, because 144021332331 - 2²⁶ = 143954223467 is a prime.

It is a super-2 number, since 2×144021332331² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 144021332295 and 144021332304.

It is not an unprimeable number, because it can be changed into a prime (144021332321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 343116 + ... + 637001.

It is an arithmetic number, because the mean of its divisors is an integer number (8982781470).

Almost surely, 2^144021332331 is an apocalyptic number.

144021332331 is a deficient number, since it is larger than the sum of its proper divisors (71565422949).

144021332331 is a wasteful number, since it uses less digits than its factorization.

144021332331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 980715 (or 980712 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 144021332331 its reverse (133233120441), we get a palindrome (277254452772).

The spelling of 144021332331 in words is "one hundred forty-four billion, twenty-one million, three hundred thirty-two thousand, three hundred thirty-one".