1213405320334 has 16 divisors (see below), whose sum is σ = 1917682371072. Its totient is φ = 574690065048.

The previous prime is 1213405320331. The next prime is 1213405320353. The reversal of 1213405320334 is 4330235043121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1213405320296 and 1213405320305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213405320331) by changing a digit.

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, 128045634 + ... + 128055109.

It is an arithmetic number, because the mean of its divisors is an integer number (119855148192).

Almost surely, 2^{1213405320334} is an apocalyptic number.

1213405320334 is a deficient number, since it is larger than the sum of its proper divisors (704277050738).

1213405320334 is a wasteful number, since it uses less digits than its factorization.

1213405320334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256100871.

The product of its (nonzero) digits is 25920, while the sum is 31.

The spelling of 1213405320334 in words is "one trillion, two hundred thirteen billion, four hundred five million, three hundred twenty thousand, three hundred thirty-four".