104020131289 has 2 divisors, whose sum is σ = 104020131290. Its totient is φ = 104020131288.

The previous prime is 104020131283. The next prime is 104020131331. The reversal of 104020131289 is 982131020401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99328977225 + 4691154064 = 315165^2 + 68492^2 .

It is a cyclic number.

It is not a de Polignac number, because 104020131289 - 2⁹ = 104020130777 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 104020131289.

It is not a weakly prime, because it can be changed into another prime (104020131283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52010065644 + 52010065645.

It is an arithmetic number, because the mean of its divisors is an integer number (52010065645).

Almost surely, 2^104020131289 is an apocalyptic number.

It is an amenable number.

104020131289 is a deficient number, since it is larger than the sum of its proper divisors (1).

104020131289 is an equidigital number, since it uses as much as digits as its factorization.

104020131289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 31.

The spelling of 104020131289 in words is "one hundred four billion, twenty million, one hundred thirty-one thousand, two hundred eighty-nine".