144426631 has 8 divisors (see below), whose sum is σ = 148890960. Its totient is φ = 140029632.

The previous prime is 144426617. The next prime is 144426649. The reversal of 144426631 is 136624441.

144426631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 144426631 - 2⁵ = 144426599 is a prime.

It is a super-2 number, since 2×144426631² = 41718103484020322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 144426593 and 144426602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144426671) 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, 12460 + ... + 21073.

It is an arithmetic number, because the mean of its divisors is an integer number (18611370).

Almost surely, 2^144426631 is an apocalyptic number.

144426631 is a deficient number, since it is larger than the sum of its proper divisors (4464329).

144426631 is an equidigital number, since it uses as much as digits as its factorization.

144426631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33665.

The product of its digits is 13824, while the sum is 31.

The square root of 144426631 is about 12017.7631446122. The cubic root of 144426631 is about 524.6654025186.

The spelling of 144426631 in words is "one hundred forty-four million, four hundred twenty-six thousand, six hundred thirty-one".