1231230340311 has 16 divisors (see below), whose sum is σ = 1647058503168. Its totient is φ = 818111650400.

The previous prime is 1231230340297. The next prime is 1231230340331. The reversal of 1231230340311 is 1130430321321.

It is a cyclic number.

It is not a de Polignac number, because 1231230340311 - 2⁹ = 1231230339799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231230340331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12472630 + ... + 12570956.

It is an arithmetic number, because the mean of its divisors is an integer number (102941156448).

Almost surely, 2^{1231230340311} is an apocalyptic number.

1231230340311 is a deficient number, since it is larger than the sum of its proper divisors (415828162857).

1231230340311 is a wasteful number, since it uses less digits than its factorization.

1231230340311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112062.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 1231230340311 its reverse (1130430321321), we get a palindrome (2361660661632).

The spelling of 1231230340311 in words is "one trillion, two hundred thirty-one billion, two hundred thirty million, three hundred forty thousand, three hundred eleven".