1312101311 has 4 divisors (see below), whose sum is σ = 1344103824. Its totient is φ = 1280098800.

The previous prime is 1312101251. The next prime is 1312101313. The reversal of 1312101311 is 1131012131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1131012131 = 137 ⋅8255563.

It is a cyclic number.

It is not a de Polignac number, because 1312101311 - 2¹⁴ = 1312084927 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 (1312101313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16001195 + ... + 16001276.

It is an arithmetic number, because the mean of its divisors is an integer number (336025956).

Almost surely, 2^1312101311 is an apocalyptic number.

1312101311 is a deficient number, since it is larger than the sum of its proper divisors (32002513).

1312101311 is an equidigital number, since it uses as much as digits as its factorization.

1312101311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32002512.

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

The square root of 1312101311 is about 36222.9390165955. The cubic root of 1312101311 is about 1094.7689124048.

Adding to 1312101311 its reverse (1131012131), we get a palindrome (2443113442).

The spelling of 1312101311 in words is "one billion, three hundred twelve million, one hundred one thousand, three hundred eleven".