101213323243 has 4 divisors (see below), whose sum is σ = 101214214200. Its totient is φ = 101212432288.

The previous prime is 101213323231. The next prime is 101213323297. The reversal of 101213323243 is 342323312101.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 342323312101 = 53 ⋅6458930417.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101213323243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101213323943) 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, 245005 + ... + 512302.

It is an arithmetic number, because the mean of its divisors is an integer number (25303553550).

Almost surely, 2^101213323243 is an apocalyptic number.

101213323243 is a deficient number, since it is larger than the sum of its proper divisors (890957).

101213323243 is an equidigital number, since it uses as much as digits as its factorization.

101213323243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 890956.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 101213323243 its reverse (342323312101), we get a palindrome (443536635344).

The spelling of 101213323243 in words is "one hundred one billion, two hundred thirteen million, three hundred twenty-three thousand, two hundred forty-three".