1312202311 has 24 divisors (see below), whose sum is σ = 1547249040. Its totient is φ = 1109509632.

The previous prime is 1312202291. The next prime is 1312202327. The reversal of 1312202311 is 1132022131.

It is not a de Polignac number, because 1312202311 - 2⁷ = 1312202183 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 (1312202351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1850425 + ... + 1851133.

It is an arithmetic number, because the mean of its divisors is an integer number (64468710).

Almost surely, 2^1312202311 is an apocalyptic number.

1312202311 is a deficient number, since it is larger than the sum of its proper divisors (235046729).

1312202311 is a wasteful number, since it uses less digits than its factorization.

1312202311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1183 (or 1176 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1312202311 is about 36224.3331339584. Note that the first 3 decimals coincide. The cubic root of 1312202311 is about 1094.7970019083.

Adding to 1312202311 its reverse (1132022131), we get a palindrome (2444224442).

The spelling of 1312202311 in words is "one billion, three hundred twelve million, two hundred two thousand, three hundred eleven".