1303121233 has 2 divisors, whose sum is σ = 1303121234. Its totient is φ = 1303121232.

The previous prime is 1303121231. The next prime is 1303121243. The reversal of 1303121233 is 3321213031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 906792769 + 396328464 = 30113^2 + 19908^2 .

It is a cyclic number.

It is not a de Polignac number, because 1303121233 - 2¹ = 1303121231 is a prime.

Together with 1303121231, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1303121233.

It is not a weakly prime, because it can be changed into another prime (1303121231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 651560616 + 651560617.

It is an arithmetic number, because the mean of its divisors is an integer number (651560617).

Almost surely, 2^1303121233 is an apocalyptic number.

It is an amenable number.

1303121233 is a deficient number, since it is larger than the sum of its proper divisors (1).

1303121233 is an equidigital number, since it uses as much as digits as its factorization.

1303121233 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 1303121233 is about 36098.7705192296. The cubic root of 1303121233 is about 1092.2656443029.

Adding to 1303121233 its reverse (3321213031), we get a palindrome (4624334264).

The spelling of 1303121233 in words is "one billion, three hundred three million, one hundred twenty-one thousand, two hundred thirty-three".