11431113206231 has 2 divisors, whose sum is σ = 11431113206232. Its totient is φ = 11431113206230.

The previous prime is 11431113206119. The next prime is 11431113206239. The reversal of 11431113206231 is 13260231113411.

11431113206231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (13260231113411) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11431113206231 is a prime.

It is a super-2 number, since 2×11431113206231² (a number of 27 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 11431113206194 and 11431113206203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11431113206239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5715556603115 + 5715556603116.

It is an arithmetic number, because the mean of its divisors is an integer number (5715556603116).

Almost surely, 2^{11431113206231} is an apocalyptic number.

11431113206231 is a deficient number, since it is larger than the sum of its proper divisors (1).

11431113206231 is an equidigital number, since it uses as much as digits as its factorization.

11431113206231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 29.

Adding to 11431113206231 its reverse (13260231113411), we get a palindrome (24691344319642).

The spelling of 11431113206231 in words is "eleven trillion, four hundred thirty-one billion, one hundred thirteen million, two hundred six thousand, two hundred thirty-one".