1312130213 has 2 divisors, whose sum is σ = 1312130214. Its totient is φ = 1312130212.

The previous prime is 1312130179. The next prime is 1312130221. The reversal of 1312130213 is 3120312131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1300179364 + 11950849 = 36058^2 + 3457^2 .

It is a cyclic number.

It is not a de Polignac number, because 1312130213 - 2¹² = 1312126117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1312130191 and 1312130200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1312130263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656065106 + 656065107.

It is an arithmetic number, because the mean of its divisors is an integer number (656065107).

Almost surely, 2^1312130213 is an apocalyptic number.

It is an amenable number.

1312130213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312130213 is an equidigital number, since it uses as much as digits as its factorization.

1312130213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1312130213 is about 36223.3379604917. The cubic root of 1312130213 is about 1094.7769505998.

Adding to 1312130213 its reverse (3120312131), we get a palindrome (4432442344).

It can be divided in two parts, 13121 and 30213, that added together give a palindrome (43334).

The spelling of 1312130213 in words is "one billion, three hundred twelve million, one hundred thirty thousand, two hundred thirteen".