144131993 has 2 divisors, whose sum is σ = 144131994. Its totient is φ = 144131992.

The previous prime is 144131987. The next prime is 144132011. The reversal of 144131993 is 399131441.

144131993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133911184 + 10220809 = 11572^2 + 3197^2 .

It is a cyclic number.

It is not a de Polignac number, because 144131993 - 2¹⁸ = 143869849 is a prime.

It is not a weakly prime, because it can be changed into another prime (144131903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72065996 + 72065997.

It is an arithmetic number, because the mean of its divisors is an integer number (72065997).

Almost surely, 2^144131993 is an apocalyptic number.

It is an amenable number.

144131993 is a deficient number, since it is larger than the sum of its proper divisors (1).

144131993 is an equidigital number, since it uses as much as digits as its factorization.

144131993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 35.

The square root of 144131993 is about 12005.4984486276. The cubic root of 144131993 is about 524.3083778606.

The spelling of 144131993 in words is "one hundred forty-four million, one hundred thirty-one thousand, nine hundred ninety-three".