144921311 has 8 divisors (see below), whose sum is σ = 158396544. Its totient is φ = 131996160.

The previous prime is 144921307. The next prime is 144921353. The reversal of 144921311 is 113129441.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 144921311 - 2² = 144921307 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144921611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136970 + ... + 138023.

It is an arithmetic number, because the mean of its divisors is an integer number (19799568).

Almost surely, 2^144921311 is an apocalyptic number.

144921311 is a deficient number, since it is larger than the sum of its proper divisors (13475233).

144921311 is a wasteful number, since it uses less digits than its factorization.

144921311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275041.

The product of its digits is 864, while the sum is 26.

The square root of 144921311 is about 12038.3267525018. The cubic root of 144921311 is about 525.2637356676.

The spelling of 144921311 in words is "one hundred forty-four million, nine hundred twenty-one thousand, three hundred eleven".