140243134312 has 32 divisors (see below), whose sum is σ = 279618885000. Its totient is φ = 65713506304.

The previous prime is 140243134307. The next prime is 140243134313. The reversal of 140243134312 is 213431342041.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 73871978436 + 66371155876 = 271794^2 + 257626^2 .

It is not an unprimeable number, because it can be changed into a prime (140243134313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2181187 + ... + 2244562.

Almost surely, 2^140243134312 is an apocalyptic number.

It is an amenable number.

140243134312 is a deficient number, since it is larger than the sum of its proper divisors (139375750688).

140243134312 is a wasteful number, since it uses less digits than its factorization.

140243134312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4426005 (or 4426001 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 140243134312 its reverse (213431342041), we get a palindrome (353674476353).

The spelling of 140243134312 in words is "one hundred forty billion, two hundred forty-three million, one hundred thirty-four thousand, three hundred twelve".