1212312303 has 6 divisors (see below), whose sum is σ = 1751117784. Its totient is φ = 808208196.

The previous prime is 1212312239. The next prime is 1212312307. The reversal of 1212312303 is 3032132121.

It is not a de Polignac number, because 1212312303 - 2⁶ = 1212312239 is a prime.

It is a super-2 number, since 2×1212312303² = 2939402240010327618, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212312307) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 67350675 + ... + 67350692.

It is an arithmetic number, because the mean of its divisors is an integer number (291852964).

Almost surely, 2^1212312303 is an apocalyptic number.

1212312303 is a deficient number, since it is larger than the sum of its proper divisors (538805481).

1212312303 is a wasteful number, since it uses less digits than its factorization.

1212312303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134701373 (or 134701370 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1212312303 is about 34818.2754167980. The cubic root of 1212312303 is about 1066.2805914093.

Adding to 1212312303 its reverse (3032132121), we get a palindrome (4244444424).

The spelling of 1212312303 in words is "one billion, two hundred twelve million, three hundred twelve thousand, three hundred three".