144205631 has 2 divisors, whose sum is σ = 144205632. Its totient is φ = 144205630.

The previous prime is 144205619. The next prime is 144205639. The reversal of 144205631 is 136502441.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144205631 is a prime.

It is a super-2 number, since 2×144205631² = 41590528024216322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 144205631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144205639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72102815 + 72102816.

It is an arithmetic number, because the mean of its divisors is an integer number (72102816).

Almost surely, 2^144205631 is an apocalyptic number.

144205631 is a deficient number, since it is larger than the sum of its proper divisors (1).

144205631 is an equidigital number, since it uses as much as digits as its factorization.

144205631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 144205631 is about 12008.5649017691. The cubic root of 144205631 is about 524.3976535451.

The spelling of 144205631 in words is "one hundred forty-four million, two hundred five thousand, six hundred thirty-one".