1213535023343 has 4 divisors (see below), whose sum is σ = 1213805845728. Its totient is φ = 1213264200960.

The previous prime is 1213535023303. The next prime is 1213535023357. The reversal of 1213535023343 is 3433205353121.

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

It is a cyclic number.

It is not a de Polignac number, because 1213535023343 - 2¹⁶ = 1213534957807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213535023303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135404471 + ... + 135413432.

It is an arithmetic number, because the mean of its divisors is an integer number (303451461432).

Almost surely, 2^{1213535023343} is an apocalyptic number.

1213535023343 is a deficient number, since it is larger than the sum of its proper divisors (270822385).

1213535023343 is an equidigital number, since it uses as much as digits as its factorization.

1213535023343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270822384.

The product of its (nonzero) digits is 97200, while the sum is 35.

The spelling of 1213535023343 in words is "one trillion, two hundred thirteen billion, five hundred thirty-five million, twenty-three thousand, three hundred forty-three".