139293168431 has 2 divisors, whose sum is σ = 139293168432. Its totient is φ = 139293168430.

The previous prime is 139293168389. The next prime is 139293168439. The reversal of 139293168431 is 134861392931.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139293168431 is a prime.

It is a super-2 number, since 2×139293168431² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 139293168431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139293168439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69646584215 + 69646584216.

It is an arithmetic number, because the mean of its divisors is an integer number (69646584216).

Almost surely, 2^139293168431 is an apocalyptic number.

139293168431 is a deficient number, since it is larger than the sum of its proper divisors (1).

139293168431 is an equidigital number, since it uses as much as digits as its factorization.

139293168431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 839808, while the sum is 50.

The spelling of 139293168431 in words is "one hundred thirty-nine billion, two hundred ninety-three million, one hundred sixty-eight thousand, four hundred thirty-one".