31204231439 has 2 divisors, whose sum is σ = 31204231440. Its totient is φ = 31204231438.

The previous prime is 31204231403. The next prime is 31204231453. The reversal of 31204231439 is 93413240213.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31204231439 - 2¹² = 31204227343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31204231039) 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, 15602115719 + 15602115720.

It is an arithmetic number, because the mean of its divisors is an integer number (15602115720).

Almost surely, 2^31204231439 is an apocalyptic number.

31204231439 is a deficient number, since it is larger than the sum of its proper divisors (1).

31204231439 is an equidigital number, since it uses as much as digits as its factorization.

31204231439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 32.

The spelling of 31204231439 in words is "thirty-one billion, two hundred four million, two hundred thirty-one thousand, four hundred thirty-nine".