140431132 has 24 divisors (see below), whose sum is σ = 257173056. Its totient is φ = 67025088.

The previous prime is 140431097. The next prime is 140431153. The reversal of 140431132 is 231134041.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1108 + ... + 16795.

It is an arithmetic number, because the mean of its divisors is an integer number (10715544).

Almost surely, 2^140431132 is an apocalyptic number.

It is an amenable number.

140431132 is a deficient number, since it is larger than the sum of its proper divisors (116741924).

140431132 is a wasteful number, since it uses less digits than its factorization.

140431132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17997 (or 17995 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 140431132 is about 11850.3642138122. The cubic root of 140431132 is about 519.7818759721.

Adding to 140431132 its reverse (231134041), we get a palindrome (371565173).

The spelling of 140431132 in words is "one hundred forty million, four hundred thirty-one thousand, one hundred thirty-two".