1213303301 has 4 divisors (see below), whose sum is σ = 1386632352. Its totient is φ = 1039974252.

The previous prime is 1213303253. The next prime is 1213303313. The reversal of 1213303301 is 1033033121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1033033121 = 27653 ⋅37357.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1213303301 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1213303301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213303361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86664515 + ... + 86664528.

It is an arithmetic number, because the mean of its divisors is an integer number (346658088).

Almost surely, 2^1213303301 is an apocalyptic number.

It is an amenable number.

1213303301 is a deficient number, since it is larger than the sum of its proper divisors (173329051).

1213303301 is an equidigital number, since it uses as much as digits as its factorization.

1213303301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173329050.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 1213303301 is about 34832.5035132418. The cubic root of 1213303301 is about 1066.5710540058.

Adding to 1213303301 its reverse (1033033121), we get a palindrome (2246336422).

The spelling of 1213303301 in words is "one billion, two hundred thirteen million, three hundred three thousand, three hundred one".