1323673173091 has 2 divisors, whose sum is σ = 1323673173092. Its totient is φ = 1323673173090.

The previous prime is 1323673173041. The next prime is 1323673173157. The reversal of 1323673173091 is 1903713763231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1323673173091 - 2⁹ = 1323673172579 is a prime.

It is a super-2 number, since 2×1323673173091² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1323673173001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661836586545 + 661836586546.

It is an arithmetic number, because the mean of its divisors is an integer number (661836586546).

Almost surely, 2^{1323673173091} is an apocalyptic number.

1323673173091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1323673173091 is an equidigital number, since it uses as much as digits as its factorization.

1323673173091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 428652, while the sum is 46.

The spelling of 1323673173091 in words is "one trillion, three hundred twenty-three billion, six hundred seventy-three million, one hundred seventy-three thousand, ninety-one".