50131430389 has 2 divisors, whose sum is σ = 50131430390. Its totient is φ = 50131430388.

The previous prime is 50131430381. The next prime is 50131430431. The reversal of 50131430389 is 98303413105.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34975358289 + 15156072100 = 187017^2 + 123110^2 .

It is a cyclic number.

It is not a de Polignac number, because 50131430389 - 2³ = 50131430381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50131430381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25065715194 + 25065715195.

It is an arithmetic number, because the mean of its divisors is an integer number (25065715195).

Almost surely, 2^50131430389 is an apocalyptic number.

It is an amenable number.

50131430389 is a deficient number, since it is larger than the sum of its proper divisors (1).

50131430389 is an equidigital number, since it uses as much as digits as its factorization.

50131430389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 37.

The spelling of 50131430389 in words is "fifty billion, one hundred thirty-one million, four hundred thirty thousand, three hundred eighty-nine".