13121231303 has 2 divisors, whose sum is σ = 13121231304. Its totient is φ = 13121231302.

The previous prime is 13121231267. The next prime is 13121231323. The reversal of 13121231303 is 30313212131.

It is an a-pointer prime, because the next prime (13121231323) can be obtained adding 13121231303 to its sum of digits (20).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13121231303 - 2⁶ = 13121231239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13121231323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6560615651 + 6560615652.

It is an arithmetic number, because the mean of its divisors is an integer number (6560615652).

Almost surely, 2^13121231303 is an apocalyptic number.

13121231303 is a deficient number, since it is larger than the sum of its proper divisors (1).

13121231303 is an equidigital number, since it uses as much as digits as its factorization.

13121231303 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 20.

Adding to 13121231303 its reverse (30313212131), we get a palindrome (43434443434).

The spelling of 13121231303 in words is "thirteen billion, one hundred twenty-one million, two hundred thirty-one thousand, three hundred three".