1303121011 has 2 divisors, whose sum is σ = 1303121012. Its totient is φ = 1303121010.

The previous prime is 1303120997. The next prime is 1303121021. The reversal of 1303121011 is 1101213031.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1303121011 - 2¹³ = 1303112819 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1303120982 and 1303121000.

It is not a weakly prime, because it can be changed into another prime (1303121021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 651560505 + 651560506.

It is an arithmetic number, because the mean of its divisors is an integer number (651560506).

Almost surely, 2^1303121011 is an apocalyptic number.

1303121011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1303121011 is an equidigital number, since it uses as much as digits as its factorization.

1303121011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1303121011 is about 36098.7674443325. The cubic root of 1303121011 is about 1092.2655822767.

Adding to 1303121011 its reverse (1101213031), we get a palindrome (2404334042).

The spelling of 1303121011 in words is "one billion, three hundred three million, one hundred twenty-one thousand, eleven".