240432311209 has 2 divisors, whose sum is σ = 240432311210. Its totient is φ = 240432311208.

The previous prime is 240432311131. The next prime is 240432311243. The reversal of 240432311209 is 902113234042.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 176538627225 + 63893683984 = 420165^2 + 252772^2 .

It is a cyclic number.

It is not a de Polignac number, because 240432311209 - 2¹⁵ = 240432278441 is a prime.

It is not a weakly prime, because it can be changed into another prime (240432311309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120216155604 + 120216155605.

It is an arithmetic number, because the mean of its divisors is an integer number (120216155605).

Almost surely, 2^240432311209 is an apocalyptic number.

It is an amenable number.

240432311209 is a deficient number, since it is larger than the sum of its proper divisors (1).

240432311209 is an equidigital number, since it uses as much as digits as its factorization.

240432311209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 31.

The spelling of 240432311209 in words is "two hundred forty billion, four hundred thirty-two million, three hundred eleven thousand, two hundred nine".