1308905997323 has 4 divisors (see below), whose sum is σ = 1308910334880. Its totient is φ = 1308901659768.

The previous prime is 1308905997299. The next prime is 1308905997391. The reversal of 1308905997323 is 3237995098031.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1308905997323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1308905996323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1679315 + ... + 2331932.

It is an arithmetic number, because the mean of its divisors is an integer number (327227583720).

Almost surely, 2^{1308905997323} is an apocalyptic number.

1308905997323 is a deficient number, since it is larger than the sum of its proper divisors (4337557).

1308905997323 is an equidigital number, since it uses as much as digits as its factorization.

1308905997323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4337556.

The product of its (nonzero) digits is 11022480, while the sum is 59.

The spelling of 1308905997323 in words is "one trillion, three hundred eight billion, nine hundred five million, nine hundred ninety-seven thousand, three hundred twenty-three".