201332331009 has 12 divisors (see below), whose sum is σ = 290872671700. Its totient is φ = 134194182624.

The previous prime is 201332330993. The next prime is 201332331023. The reversal of 201332331009 is 900133233102.

201332331009 is a `hidden beast` number, since 20 + 1 + 3 + 323 + 310 + 0 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 188119977984 + 13212353025 = 433728^2 + 114945^2 .

It is not a de Polignac number, because 201332331009 - 2⁴ = 201332330993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201332331029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2234314 + ... + 2322675.

Almost surely, 2^201332331009 is an apocalyptic number.

It is an amenable number.

201332331009 is a deficient number, since it is larger than the sum of its proper divisors (89540340691).

201332331009 is a wasteful number, since it uses less digits than its factorization.

201332331009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4561904 (or 4561901 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 27.

The spelling of 201332331009 in words is "two hundred one billion, three hundred thirty-two million, three hundred thirty-one thousand, nine".