140431268 has 12 divisors (see below), whose sum is σ = 249121740. Its totient is φ = 69253632.

The previous prime is 140431267. The next prime is 140431279. The reversal of 140431268 is 862134041.

It can be written as a sum of positive squares in 2 ways, for example, as 38663524 + 101767744 = 6218^2 + 10088^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 140431268.

It is not an unprimeable number, because it can be changed into a prime (140431267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 240173 + ... + 240756.

It is an arithmetic number, because the mean of its divisors is an integer number (20760145).

Almost surely, 2^140431268 is an apocalyptic number.

It is an amenable number.

140431268 is a deficient number, since it is larger than the sum of its proper divisors (108690472).

140431268 is a wasteful number, since it uses less digits than its factorization.

140431268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481006 (or 481004 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 140431268 is about 11850.3699520310. The cubic root of 140431268 is about 519.7820437656.

The spelling of 140431268 in words is "one hundred forty million, four hundred thirty-one thousand, two hundred sixty-eight".