12303131212111 has 4 divisors (see below), whose sum is σ = 12307020918472. Its totient is φ = 12299241505752.

The previous prime is 12303131212037. The next prime is 12303131212139. The reversal of 12303131212111 is 11121213130321.

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 12303131212111 - 2¹³ = 12303131203919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12303131212181) 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, 1944848436 + ... + 1944854761.

It is an arithmetic number, because the mean of its divisors is an integer number (3076755229618).

Almost surely, 2^{12303131212111} is an apocalyptic number.

12303131212111 is a deficient number, since it is larger than the sum of its proper divisors (3889706361).

12303131212111 is an equidigital number, since it uses as much as digits as its factorization.

12303131212111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3889706360.

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 12303131212111 its reverse (11121213130321), we get a palindrome (23424344342432).

The spelling of 12303131212111 in words is "twelve trillion, three hundred three billion, one hundred thirty-one million, two hundred twelve thousand, one hundred eleven".