231101332009 has 2 divisors, whose sum is σ = 231101332010. Its totient is φ = 231101332008.

The previous prime is 231101332001. The next prime is 231101332013. The reversal of 231101332009 is 900233101132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 219567216400 + 11534115609 = 468580^2 + 107397^2 .

It is a cyclic number.

It is not a de Polignac number, because 231101332009 - 2³ = 231101332001 is a prime.

It is not a weakly prime, because it can be changed into another prime (231101332001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115550666004 + 115550666005.

It is an arithmetic number, because the mean of its divisors is an integer number (115550666005).

Almost surely, 2^231101332009 is an apocalyptic number.

It is an amenable number.

231101332009 is a deficient number, since it is larger than the sum of its proper divisors (1).

231101332009 is an equidigital number, since it uses as much as digits as its factorization.

231101332009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 25.

The spelling of 231101332009 in words is "two hundred thirty-one billion, one hundred one million, three hundred thirty-two thousand, nine".