1231124211323 has 4 divisors (see below), whose sum is σ = 1244957067720. Its totient is φ = 1217291354928.

The previous prime is 1231124211277. The next prime is 1231124211391. The reversal of 1231124211323 is 3231124211321.

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 1231124211323 - 2¹² = 1231124207227 is a prime.

It is a super-2 number, since 2×1231124211323² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1231124211292 and 1231124211301.

It is not an unprimeable number, because it can be changed into a prime (1231124271323) 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, 6916428065 + ... + 6916428242.

It is an arithmetic number, because the mean of its divisors is an integer number (311239266930).

Almost surely, 2^{1231124211323} is an apocalyptic number.

1231124211323 is a deficient number, since it is larger than the sum of its proper divisors (13832856397).

1231124211323 is an equidigital number, since it uses as much as digits as its factorization.

1231124211323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13832856396.

The product of its digits is 1728, while the sum is 26.

Adding to 1231124211323 its reverse (3231124211321), we get a palindrome (4462248422644).

The spelling of 1231124211323 in words is "one trillion, two hundred thirty-one billion, one hundred twenty-four million, two hundred eleven thousand, three hundred twenty-three".