133440311209 has 2 divisors, whose sum is σ = 133440311210. Its totient is φ = 133440311208.

The previous prime is 133440311197. The next prime is 133440311227. The reversal of 133440311209 is 902113044331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 104363240809 + 29077070400 = 323053^2 + 170520^2 .

It is a cyclic number.

It is not a de Polignac number, because 133440311209 - 2¹¹ = 133440309161 is a prime.

It is not a weakly prime, because it can be changed into another prime (133440312209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66720155604 + 66720155605.

It is an arithmetic number, because the mean of its divisors is an integer number (66720155605).

Almost surely, 2^133440311209 is an apocalyptic number.

It is an amenable number.

133440311209 is a deficient number, since it is larger than the sum of its proper divisors (1).

133440311209 is an equidigital number, since it uses as much as digits as its factorization.

133440311209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 31.

The spelling of 133440311209 in words is "one hundred thirty-three billion, four hundred forty million, three hundred eleven thousand, two hundred nine".