10311121243 has 4 divisors (see below), whose sum is σ = 10417421560. Its totient is φ = 10204820928.

The previous prime is 10311121213. The next prime is 10311121279. The reversal of 10311121243 is 34212111301.

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 10311121243 - 2¹³ = 10311113051 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 10311121243.

It is not an unprimeable number, because it can be changed into a prime (10311121213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53150013 + ... + 53150206.

It is an arithmetic number, because the mean of its divisors is an integer number (2604355390).

Almost surely, 2^10311121243 is an apocalyptic number.

10311121243 is a deficient number, since it is larger than the sum of its proper divisors (106300317).

10311121243 is an equidigital number, since it uses as much as digits as its factorization.

10311121243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106300316.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 10311121243 its reverse (34212111301), we get a palindrome (44523232544).

The spelling of 10311121243 in words is "ten billion, three hundred eleven million, one hundred twenty-one thousand, two hundred forty-three".