1321233103 has 2 divisors, whose sum is σ = 1321233104. Its totient is φ = 1321233102.

The previous prime is 1321233061. The next prime is 1321233139. The reversal of 1321233103 is 3013321231.

It is a strong prime.

It is an emirp because it is prime and its reverse (3013321231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1321233103 - 2¹⁷ = 1321102031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1321233163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660616551 + 660616552.

It is an arithmetic number, because the mean of its divisors is an integer number (660616552).

Almost surely, 2^1321233103 is an apocalyptic number.

1321233103 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321233103 is an equidigital number, since it uses as much as digits as its factorization.

1321233103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 1321233103 is about 36348.7703093241. The cubic root of 1321233103 is about 1097.3027865711.

Adding to 1321233103 its reverse (3013321231), we get a palindrome (4334554334).

It can be divided in two parts, 132 and 1233103, that added together give a triangular number (1233235 = T₁₅₇₀).

The spelling of 1321233103 in words is "one billion, three hundred twenty-one million, two hundred thirty-three thousand, one hundred three".