1233312012 has 18 divisors (see below), whose sum is σ = 3117538788. Its totient is φ = 411103992.

The previous prime is 1233312011. The next prime is 1233312013. The reversal of 1233312012 is 2102133321.

It is an interprime number because it is at equal distance from previous prime (1233312011) and next prime (1233312013).

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1233312011) 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, 17129298 + ... + 17129369.

Almost surely, 2^1233312012 is an apocalyptic number.

1233312012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1233312012 is an abundant number, since it is smaller than the sum of its proper divisors (1884226776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1233312012 is a wasteful number, since it uses less digits than its factorization.

1233312012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34258677 (or 34258672 counting only the distinct ones).

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

The square root of 1233312012 is about 35118.5422818203. The cubic root of 1233312012 is about 1072.4020951592.

Adding to 1233312012 its reverse (2102133321), we get a palindrome (3335445333).

The spelling of 1233312012 in words is "one billion, two hundred thirty-three million, three hundred twelve thousand, twelve".