123335320397 has 2 divisors, whose sum is σ = 123335320398. Its totient is φ = 123335320396.

The previous prime is 123335320393. The next prime is 123335320429. The reversal of 123335320397 is 793023533321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73956258601 + 49379061796 = 271949^2 + 222214^2 .

It is an emirp because it is prime and its reverse (793023533321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123335320397 - 2² = 123335320393 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123335320393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61667660198 + 61667660199.

It is an arithmetic number, because the mean of its divisors is an integer number (61667660199).

Almost surely, 2^123335320397 is an apocalyptic number.

It is an amenable number.

123335320397 is a deficient number, since it is larger than the sum of its proper divisors (1).

123335320397 is an equidigital number, since it uses as much as digits as its factorization.

123335320397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 306180, while the sum is 41.

The spelling of 123335320397 in words is "one hundred twenty-three billion, three hundred thirty-five million, three hundred twenty thousand, three hundred ninety-seven".