144321187 has 2 divisors, whose sum is σ = 144321188. Its totient is φ = 144321186.

The previous prime is 144321167. The next prime is 144321217. The reversal of 144321187 is 781123441.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 144321187 - 2²³ = 135932579 is a prime.

It is not a weakly prime, because it can be changed into another prime (144321137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72160593 + 72160594.

It is an arithmetic number, because the mean of its divisors is an integer number (72160594).

Almost surely, 2^144321187 is an apocalyptic number.

144321187 is a deficient number, since it is larger than the sum of its proper divisors (1).

144321187 is an equidigital number, since it uses as much as digits as its factorization.

144321187 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5376, while the sum is 31.

The square root of 144321187 is about 12013.3753375144. The cubic root of 144321187 is about 524.5376876430.

The spelling of 144321187 in words is "one hundred forty-four million, three hundred twenty-one thousand, one hundred eighty-seven".