144219631 has 2 divisors, whose sum is σ = 144219632. Its totient is φ = 144219630.

The previous prime is 144219611. The next prime is 144219727. The reversal of 144219631 is 136912441.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 144219631 - 2¹¹ = 144217583 is a prime.

It is a super-2 number, since 2×144219631² = 41598603931552322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 144219593 and 144219602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144219601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72109815 + 72109816.

It is an arithmetic number, because the mean of its divisors is an integer number (72109816).

Almost surely, 2^144219631 is an apocalyptic number.

144219631 is a deficient number, since it is larger than the sum of its proper divisors (1).

144219631 is an equidigital number, since it uses as much as digits as its factorization.

144219631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 31.

The square root of 144219631 is about 12009.1478049027. The cubic root of 144219631 is about 524.4146231311.

The spelling of 144219631 in words is "one hundred forty-four million, two hundred nineteen thousand, six hundred thirty-one".