1213320233 has 2 divisors, whose sum is σ = 1213320234. Its totient is φ = 1213320232.

The previous prime is 1213320193. The next prime is 1213320271. The reversal of 1213320233 is 3320233121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 686020864 + 527299369 = 26192^2 + 22963^2 .

It is a cyclic number.

It is not a de Polignac number, because 1213320233 - 2²⁶ = 1146211369 is a prime.

It is not a weakly prime, because it can be changed into another prime (1213320133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606660116 + 606660117.

It is an arithmetic number, because the mean of its divisors is an integer number (606660117).

Almost surely, 2^1213320233 is an apocalyptic number.

It is an amenable number.

1213320233 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213320233 is an equidigital number, since it uses as much as digits as its factorization.

1213320233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 1213320233 is about 34832.7465612461. The cubic root of 1213320233 is about 1066.5760154190.

Adding to 1213320233 its reverse (3320233121), we get a palindrome (4533553354).

The spelling of 1213320233 in words is "one billion, two hundred thirteen million, three hundred twenty thousand, two hundred thirty-three".