140231208 has 32 divisors (see below), whose sum is σ = 377546400. Its totient is φ = 43147968.

The previous prime is 140231173. The next prime is 140231209. The reversal of 140231208 is 802132041.

It is not an unprimeable number, because it can be changed into a prime (140231209) 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 7 ways as a sum of consecutive naturals, for example, 224418 + ... + 225041.

It is an arithmetic number, because the mean of its divisors is an integer number (11798325).

Almost surely, 2^140231208 is an apocalyptic number.

It is an amenable number.

140231208 is an abundant number, since it is smaller than the sum of its proper divisors (237315192).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

140231208 is a wasteful number, since it uses less digits than its factorization.

140231208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449481 (or 449477 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 140231208 is about 11841.9258568866. The cubic root of 140231208 is about 519.5350973011.

Adding to 140231208 its reverse (802132041), we get a palindrome (942363249).

The spelling of 140231208 in words is "one hundred forty million, two hundred thirty-one thousand, two hundred eight".