1231501314311 has 16 divisors (see below), whose sum is σ = 1311869369664. Its totient is φ = 1152018000384.

The previous prime is 1231501314299. The next prime is 1231501314317. The reversal of 1231501314311 is 1134131051321.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1231501314311 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 (1231501314317) 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, 10124225 + ... + 10245141.

It is an arithmetic number, because the mean of its divisors is an integer number (81991835604).

Almost surely, 2^{1231501314311} is an apocalyptic number.

1231501314311 is a deficient number, since it is larger than the sum of its proper divisors (80368055353).

1231501314311 is a wasteful number, since it uses less digits than its factorization.

1231501314311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124570.

The product of its (nonzero) digits is 1080, while the sum is 26.

Adding to 1231501314311 its reverse (1134131051321), we get a palindrome (2365632365632).

The spelling of 1231501314311 in words is "one trillion, two hundred thirty-one billion, five hundred one million, three hundred fourteen thousand, three hundred eleven".