213303331430243 has 4 divisors (see below), whose sum is σ = 218263874021688. Its totient is φ = 208342788838800.

The previous prime is 213303331430171. The next prime is 213303331430257. The reversal of 213303331430243 is 342034133303312.

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 213303331430243 - 2⁸ = 213303331429987 is a prime.

It is a super-2 number, since 2×213303331430243² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (213303331480243) 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, 2480271295658 + ... + 2480271295743.

It is an arithmetic number, because the mean of its divisors is an integer number (54565968505422).

Almost surely, 2^{213303331430243} is an apocalyptic number.

213303331430243 is a deficient number, since it is larger than the sum of its proper divisors (4960542591445).

213303331430243 is an equidigital number, since it uses as much as digits as its factorization.

213303331430243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4960542591444.

The product of its (nonzero) digits is 139968, while the sum is 35.

Adding to 213303331430243 its reverse (342034133303312), we get a palindrome (555337464733555).

The spelling of 213303331430243 in words is "two hundred thirteen trillion, three hundred three billion, three hundred thirty-one million, four hundred thirty thousand, two hundred forty-three".