1312110311 has 2 divisors, whose sum is σ = 1312110312. Its totient is φ = 1312110310.

The previous prime is 1312110287. The next prime is 1312110323. The reversal of 1312110311 is 1130112131.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (1130112131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1312110311 - 2²² = 1307916007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1312110361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656055155 + 656055156.

It is an arithmetic number, because the mean of its divisors is an integer number (656055156).

Almost surely, 2^1312110311 is an apocalyptic number.

1312110311 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312110311 is an equidigital number, since it uses as much as digits as its factorization.

1312110311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 1312110311 is about 36223.0632470530. The cubic root of 1312110311 is about 1094.7714154884.

Adding to 1312110311 its reverse (1130112131), we get a palindrome (2442222442).

It can be divided in two parts, 13121 and 10311, that added together give a palindrome (23432).

The spelling of 1312110311 in words is "one billion, three hundred twelve million, one hundred ten thousand, three hundred eleven".