144322031421 has 8 divisors (see below), whose sum is σ = 213810416960. Its totient is φ = 96214687596.

The previous prime is 144322031419. The next prime is 144322031449. The reversal of 144322031421 is 124130223441.

144322031421 is a `hidden beast` number, since 1 + 4 + 4 + 32 + 203 + 1 + 421 = 666.

It is not a de Polignac number, because 144322031421 - 2¹ = 144322031419 is a prime.

It is a super-2 number, since 2×144322031421² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 5345260423 = 144322031421 / (1 + 4 + 4 + 3 + 2 + 2 + 0 + 3 + 1 + 4 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144322031411) 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, 2672630185 + ... + 2672630238.

It is an arithmetic number, because the mean of its divisors is an integer number (26726302120).

Almost surely, 2^144322031421 is an apocalyptic number.

It is an amenable number.

144322031421 is a deficient number, since it is larger than the sum of its proper divisors (69488385539).

144322031421 is an equidigital number, since it uses as much as digits as its factorization.

144322031421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5345260432 (or 5345260426 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 144322031421 its reverse (124130223441), we get a palindrome (268452254862).

The spelling of 144322031421 in words is "one hundred forty-four billion, three hundred twenty-two million, thirty-one thousand, four hundred twenty-one".