101001331243 has 4 divisors (see below), whose sum is σ = 106942586040. Its totient is φ = 95060076448.

The previous prime is 101001331199. The next prime is 101001331309. The reversal of 101001331243 is 342133100101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 342133100101 = 13 ⋅26317930777.

It is a cyclic number.

It is not a de Polignac number, because 101001331243 - 2¹³ = 101001323051 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 101001331243.

It is not an unprimeable number, because it can be changed into a prime (101001331843) 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, 2970627373 + ... + 2970627406.

It is an arithmetic number, because the mean of its divisors is an integer number (26735646510).

Almost surely, 2^101001331243 is an apocalyptic number.

101001331243 is a deficient number, since it is larger than the sum of its proper divisors (5941254797).

101001331243 is an equidigital number, since it uses as much as digits as its factorization.

101001331243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5941254796.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 101001331243 its reverse (342133100101), we get a palindrome (443134431344).

The spelling of 101001331243 in words is "one hundred one billion, one million, three hundred thirty-one thousand, two hundred forty-three".