144131381 has 2 divisors, whose sum is σ = 144131382. Its totient is φ = 144131380.

The previous prime is 144131371. The next prime is 144131417. The reversal of 144131381 is 183131441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 137710225 + 6421156 = 11735^2 + 2534^2 .

It is a cyclic number.

It is not a de Polignac number, because 144131381 - 2¹⁸ = 143869237 is a prime.

It is a super-2 number, since 2×144131381² = 41547709977934322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 144131381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144131311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72065690 + 72065691.

It is an arithmetic number, because the mean of its divisors is an integer number (72065691).

Almost surely, 2^144131381 is an apocalyptic number.

It is an amenable number.

144131381 is a deficient number, since it is larger than the sum of its proper divisors (1).

144131381 is an equidigital number, since it uses as much as digits as its factorization.

144131381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 26.

The square root of 144131381 is about 12005.4729602794. The cubic root of 144131381 is about 524.3076357695.

The spelling of 144131381 in words is "one hundred forty-four million, one hundred thirty-one thousand, three hundred eighty-one".