1213011253 has 2 divisors, whose sum is σ = 1213011254. Its totient is φ = 1213011252.

The previous prime is 1213011227. The next prime is 1213011257. The reversal of 1213011253 is 3521103121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1212571684 + 439569 = 34822^2 + 663^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1213011253 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1213011253.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1213011257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606505626 + 606505627.

It is an arithmetic number, because the mean of its divisors is an integer number (606505627).

Almost surely, 2^1213011253 is an apocalyptic number.

It is an amenable number.

1213011253 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213011253 is an equidigital number, since it uses as much as digits as its factorization.

1213011253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 1213011253 is about 34828.3110845186. The cubic root of 1213011253 is about 1066.4854708603.

Adding to 1213011253 its reverse (3521103121), we get a palindrome (4734114374).

The spelling of 1213011253 in words is "one billion, two hundred thirteen million, eleven thousand, two hundred fifty-three".