2308156139321 has 2 divisors, whose sum is σ = 2308156139322. Its totient is φ = 2308156139320.

The previous prime is 2308156139257. The next prime is 2308156139381. The reversal of 2308156139321 is 1239316518032.

2308156139321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1457959651600 + 850196487721 = 1207460^2 + 922061^2 .

It is a cyclic number.

It is not a de Polignac number, because 2308156139321 - 2⁶ = 2308156139257 is a prime.

It is not a weakly prime, because it can be changed into another prime (2308156139381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1154078069660 + 1154078069661.

It is an arithmetic number, because the mean of its divisors is an integer number (1154078069661).

Almost surely, 2^{2308156139321} is an apocalyptic number.

It is an amenable number.

2308156139321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2308156139321 is an equidigital number, since it uses as much as digits as its factorization.

2308156139321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 233280, while the sum is 44.

The spelling of 2308156139321 in words is "two trillion, three hundred eight billion, one hundred fifty-six million, one hundred thirty-nine thousand, three hundred twenty-one".