1213405320345 has 8 divisors (see below), whose sum is σ = 1941448512576. Its totient is φ = 647149504176.

The previous prime is 1213405320331. The next prime is 1213405320353. The reversal of 1213405320345 is 5430235043121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1213405320345 - 2⁸ = 1213405320089 is a prime.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 40446843997 + ... + 40446844026.

It is an arithmetic number, because the mean of its divisors is an integer number (242681064072).

Almost surely, 2^{1213405320345} is an apocalyptic number.

1213405320345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1213405320345 is a deficient number, since it is larger than the sum of its proper divisors (728043192231).

1213405320345 is an equidigital number, since it uses as much as digits as its factorization.

1213405320345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80893688031.

The product of its (nonzero) digits is 43200, while the sum is 33.

The spelling of 1213405320345 in words is "one trillion, two hundred thirteen billion, four hundred five million, three hundred twenty thousand, three hundred forty-five".