1212131303 has 8 divisors (see below), whose sum is σ = 1277874528. Its totient is φ = 1147474944.

The previous prime is 1212131293. The next prime is 1212131309. The reversal of 1212131303 is 3031312121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1212131303 - 2⁴ = 1212131287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212131309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 269426 + ... + 273887.

It is an arithmetic number, because the mean of its divisors is an integer number (159734316).

Almost surely, 2^1212131303 is an apocalyptic number.

1212131303 is a deficient number, since it is larger than the sum of its proper divisors (65743225).

1212131303 is an equidigital number, since it uses as much as digits as its factorization.

1212131303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543433.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1212131303 is about 34815.6761100513. The cubic root of 1212131303 is about 1066.2275230175.

Adding to 1212131303 its reverse (3031312121), we get a palindrome (4243443424).

The spelling of 1212131303 in words is "one billion, two hundred twelve million, one hundred thirty-one thousand, three hundred three".