180012312 has 24 divisors (see below), whose sum is σ = 487533540. Its totient is φ = 60004080.

The previous prime is 180012241. The next prime is 180012331. The reversal of 180012312 is 213210081.

It is a tau number, because it is divible by the number of its divisors (24).

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1250014 + ... + 1250157.

Almost surely, 2^180012312 is an apocalyptic number.

180012312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

180012312 is an abundant number, since it is smaller than the sum of its proper divisors (307521228).

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

180012312 is a wasteful number, since it uses less digits than its factorization.

180012312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2500183 (or 2500176 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 180012312 is about 13416.8666983018. The cubic root of 180012312 is about 564.6344904080.

Adding to 180012312 its reverse (213210081), we get a palindrome (393222393).

The spelling of 180012312 in words is "one hundred eighty million, twelve thousand, three hundred twelve".