140431187236 has 6 divisors (see below), whose sum is σ = 245754577670. Its totient is φ = 70215593616.

The previous prime is 140431187231. The next prime is 140431187249. The reversal of 140431187236 is 632781134041.

It can be written as a sum of positive squares in only one way, i.e., 123179940900 + 17251246336 = 350970^2 + 131344^2 .

It is not an unprimeable number, because it can be changed into a prime (140431187231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17553898401 + ... + 17553898408.

Almost surely, 2^140431187236 is an apocalyptic number.

It is an amenable number.

140431187236 is a deficient number, since it is larger than the sum of its proper divisors (105323390434).

140431187236 is a wasteful number, since it uses less digits than its factorization.

140431187236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35107796813 (or 35107796811 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 40.

The spelling of 140431187236 in words is "one hundred forty billion, four hundred thirty-one million, one hundred eighty-seven thousand, two hundred thirty-six".