31132231439 has 2 divisors, whose sum is σ = 31132231440. Its totient is φ = 31132231438.

The previous prime is 31132231421. The next prime is 31132231453. The reversal of 31132231439 is 93413223113.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31132231439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31132230439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15566115719 + 15566115720.

It is an arithmetic number, because the mean of its divisors is an integer number (15566115720).

Almost surely, 2^31132231439 is an apocalyptic number.

31132231439 is a deficient number, since it is larger than the sum of its proper divisors (1).

31132231439 is an equidigital number, since it uses as much as digits as its factorization.

31132231439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 32.

The spelling of 31132231439 in words is "thirty-one billion, one hundred thirty-two million, two hundred thirty-one thousand, four hundred thirty-nine".