140312812 has 12 divisors (see below), whose sum is σ = 246043000. Its totient is φ = 70014816.

The previous prime is 140312803. The next prime is 140312819. The reversal of 140312812 is 218213041.

It is a happy number.

140312812 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×140312812² = 39375370422694688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (140312819) by changing a digit.

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, 33153 + ... + 37144.

Almost surely, 2^140312812 is an apocalyptic number.

It is an amenable number.

140312812 is a deficient number, since it is larger than the sum of its proper divisors (105730188).

140312812 is a wasteful number, since it uses less digits than its factorization.

140312812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70800 (or 70798 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 140312812 is about 11845.3709101910. The cubic root of 140312812 is about 519.6358545233.

Adding to 140312812 its reverse (218213041), we get a palindrome (358525853).

The spelling of 140312812 in words is "one hundred forty million, three hundred twelve thousand, eight hundred twelve".