140231020009 has 2 divisors, whose sum is σ = 140231020010. Its totient is φ = 140231020008.

The previous prime is 140231020003. The next prime is 140231020031. The reversal of 140231020009 is 900020132041.

140231020009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (140231020031) can be obtained adding 140231020009 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139248385600 + 982634409 = 373160^2 + 31347^2 .

It is a cyclic number.

It is not a de Polignac number, because 140231020009 - 2²¹ = 140228922857 is a prime.

It is not a weakly prime, because it can be changed into another prime (140231020003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70115510004 + 70115510005.

It is an arithmetic number, because the mean of its divisors is an integer number (70115510005).

Almost surely, 2^140231020009 is an apocalyptic number.

It is an amenable number.

140231020009 is a deficient number, since it is larger than the sum of its proper divisors (1).

140231020009 is an equidigital number, since it uses as much as digits as its factorization.

140231020009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

The spelling of 140231020009 in words is "one hundred forty billion, two hundred thirty-one million, twenty thousand, nine".