1312020103 has 2 divisors, whose sum is σ = 1312020104. Its totient is φ = 1312020102.

The previous prime is 1312020097. The next prime is 1312020113. The reversal of 1312020103 is 3010202131.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1312020103 is a prime.

It is a super-2 number, since 2×1312020103² = 3442793501352261218, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1312020113) 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 as a sum of consecutive naturals, namely, 656010051 + 656010052.

It is an arithmetic number, because the mean of its divisors is an integer number (656010052).

Almost surely, 2^1312020103 is an apocalyptic number.

1312020103 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312020103 is an equidigital number, since it uses as much as digits as its factorization.

1312020103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1312020103 is about 36221.8180521078. The cubic root of 1312020103 is about 1094.7463262861.

Adding to 1312020103 its reverse (3010202131), we get a palindrome (4322222234).

The spelling of 1312020103 in words is "one billion, three hundred twelve million, twenty thousand, one hundred three".