311134130231 has 2 divisors, whose sum is σ = 311134130232. Its totient is φ = 311134130230.

The previous prime is 311134130191. The next prime is 311134130249. The reversal of 311134130231 is 132031431113.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311134130231 is a prime.

It is a super-2 number, since 2×311134130231² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 311134130197 and 311134130206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311134130291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155567065115 + 155567065116.

It is an arithmetic number, because the mean of its divisors is an integer number (155567065116).

Almost surely, 2^311134130231 is an apocalyptic number.

311134130231 is a deficient number, since it is larger than the sum of its proper divisors (1).

311134130231 is an equidigital number, since it uses as much as digits as its factorization.

311134130231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 311134130231 its reverse (132031431113), we get a palindrome (443165561344).

The spelling of 311134130231 in words is "three hundred eleven billion, one hundred thirty-four million, one hundred thirty thousand, two hundred thirty-one".