1312211013 has 24 divisors (see below), whose sum is σ = 1791447840. Its totient is φ = 854330400.

The previous prime is 1312210981. The next prime is 1312211051. The reversal of 1312211013 is 3101122131.

It is a happy number.

It is not a de Polignac number, because 1312211013 - 2⁵ = 1312210981 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1312210983 and 1312211001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312211213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1871563 + ... + 1872263.

It is an arithmetic number, because the mean of its divisors is an integer number (74643660).

Almost surely, 2^1312211013 is an apocalyptic number.

It is an amenable number.

1312211013 is a deficient number, since it is larger than the sum of its proper divisors (479236827).

1312211013 is an equidigital number, since it uses as much as digits as its factorization.

1312211013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 977 (or 910 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1312211013 is about 36224.4532463914. The cubic root of 1312211013 is about 1094.7994219880.

Adding to 1312211013 its reverse (3101122131), we get a palindrome (4413333144).

The spelling of 1312211013 in words is "one billion, three hundred twelve million, two hundred eleven thousand, thirteen".