1213133363 has 4 divisors (see below), whose sum is σ = 1306451328. Its totient is φ = 1119815400.

The previous prime is 1213133357. The next prime is 1213133381. The reversal of 1213133363 is 3633313121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1213133363 - 2⁴ = 1213133347 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1213133303) 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, 46658963 + ... + 46658988.

It is an arithmetic number, because the mean of its divisors is an integer number (326612832).

Almost surely, 2^1213133363 is an apocalyptic number.

1213133363 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1213133363 is a deficient number, since it is larger than the sum of its proper divisors (93317965).

1213133363 is an equidigital number, since it uses as much as digits as its factorization.

1213133363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93317964.

The product of its digits is 2916, while the sum is 26.

The square root of 1213133363 is about 34830.0640682730. The cubic root of 1213133363 is about 1066.5212562307.

Adding to 1213133363 its reverse (3633313121), we get a palindrome (4846446484).

The spelling of 1213133363 in words is "one billion, two hundred thirteen million, one hundred thirty-three thousand, three hundred sixty-three".