1210320103 has 4 divisors (see below), whose sum is σ = 1210402440. Its totient is φ = 1210237768.

The previous prime is 1210320101. The next prime is 1210320113. The reversal of 1210320103 is 3010230121.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3010230121 = 16193 ⋅185897.

It is a cyclic number.

It is not a de Polignac number, because 1210320103 - 2¹ = 1210320101 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 (1210320101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12433 + ... + 50746.

It is an arithmetic number, because the mean of its divisors is an integer number (302600610).

Almost surely, 2^1210320103 is an apocalyptic number.

1210320103 is a deficient number, since it is larger than the sum of its proper divisors (82337).

1210320103 is an equidigital number, since it uses as much as digits as its factorization.

1210320103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82336.

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

The square root of 1210320103 is about 34789.6551147033. The cubic root of 1210320103 is about 1065.6961961049.

Adding to 1210320103 its reverse (3010230121), we get a palindrome (4220550224).

The spelling of 1210320103 in words is "one billion, two hundred ten million, three hundred twenty thousand, one hundred three".