20143281293 has 2 divisors, whose sum is σ = 20143281294. Its totient is φ = 20143281292.

The previous prime is 20143281271. The next prime is 20143281311. The reversal of 20143281293 is 39218234102.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17140570084 + 3002711209 = 130922^2 + 54797^2 .

It is a cyclic number.

It is not a de Polignac number, because 20143281293 - 2²⁶ = 20076172429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20143271293) 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, 10071640646 + 10071640647.

It is an arithmetic number, because the mean of its divisors is an integer number (10071640647).

Almost surely, 2^20143281293 is an apocalyptic number.

It is an amenable number.

20143281293 is a deficient number, since it is larger than the sum of its proper divisors (1).

20143281293 is an equidigital number, since it uses as much as digits as its factorization.

20143281293 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 35.

The spelling of 20143281293 in words is "twenty billion, one hundred forty-three million, two hundred eighty-one thousand, two hundred ninety-three".