12120431311 has 8 divisors (see below), whose sum is σ = 12195993600. Its totient is φ = 12044904888.

The previous prime is 12120431261. The next prime is 12120431317. The reversal of 12120431311 is 11313402121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12120431311 - 2³³ = 3530496719 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 (12120431317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1057590 + ... + 1068988.

It is an arithmetic number, because the mean of its divisors is an integer number (1524499200).

Almost surely, 2^12120431311 is an apocalyptic number.

12120431311 is a deficient number, since it is larger than the sum of its proper divisors (75562289).

12120431311 is a wasteful number, since it uses less digits than its factorization.

12120431311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17933.

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

Adding to 12120431311 its reverse (11313402121), we get a palindrome (23433833432).

The spelling of 12120431311 in words is "twelve billion, one hundred twenty million, four hundred thirty-one thousand, three hundred eleven".