31241442139 has 2 divisors, whose sum is σ = 31241442140. Its totient is φ = 31241442138.

The previous prime is 31241442097. The next prime is 31241442163. The reversal of 31241442139 is 93124414213.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31241442139 - 2¹¹ = 31241440091 is a prime.

It is not a weakly prime, because it can be changed into another prime (31241446139) 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, 15620721069 + 15620721070.

It is an arithmetic number, because the mean of its divisors is an integer number (15620721070).

Almost surely, 2^31241442139 is an apocalyptic number.

31241442139 is a deficient number, since it is larger than the sum of its proper divisors (1).

31241442139 is an equidigital number, since it uses as much as digits as its factorization.

31241442139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 34.

The spelling of 31241442139 in words is "thirty-one billion, two hundred forty-one million, four hundred forty-two thousand, one hundred thirty-nine".