20012312 has 16 divisors (see below), whose sum is σ = 37578840. Its totient is φ = 9991296.

The previous prime is 20012303. The next prime is 20012341. The reversal of 20012312 is 21321002.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20012293 and 20012302.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5648 + ... + 8480.

Almost surely, 2^20012312 is an apocalyptic number.

It is an amenable number.

20012312 is a deficient number, since it is larger than the sum of its proper divisors (17566528).

20012312 is a wasteful number, since it uses less digits than its factorization.

20012312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3722 (or 3718 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 20012312 is about 4473.5122666648. The cubic root of 20012312 is about 271.4974500833.

Subtracting from 20012312 its sum of digits (11), we obtain a triangular number (20012301 = T₆₃₂₆).

Adding to 20012312 its reverse (21321002), we get a palindrome (41333314).

The spelling of 20012312 in words is "twenty million, twelve thousand, three hundred twelve".