213420243003243 has 16 divisors (see below), whose sum is σ = 297018604684800. Its totient is φ = 136054608857024.

The previous prime is 213420243003223. The next prime is 213420243003301. The reversal of 213420243003243 is 342300342024312.

213420243003243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 213420243003243 - 2⁶ = 213420243003179 is a prime.

It is a super-2 number, since 2×213420243003243² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (213420243003223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 448159671 + ... + 448635632.

It is an arithmetic number, because the mean of its divisors is an integer number (18563662792800).

Almost surely, 2^{213420243003243} is an apocalyptic number.

213420243003243 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

213420243003243 is a deficient number, since it is larger than the sum of its proper divisors (83598361681557).

213420243003243 is a wasteful number, since it uses less digits than its factorization.

213420243003243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 896798778.

The product of its (nonzero) digits is 82944, while the sum is 33.

Adding to 213420243003243 its reverse (342300342024312), we get a palindrome (555720585027555).

The spelling of 213420243003243 in words is "two hundred thirteen trillion, four hundred twenty billion, two hundred forty-three million, three thousand, two hundred forty-three".