231101332011 has 32 divisors (see below), whose sum is σ = 379827590400. Its totient is φ = 137687480640.

The previous prime is 231101332009. The next prime is 231101332013. The reversal of 231101332011 is 110233101132.

231101332011 is a `hidden beast` number, since 231 + 101 + 3 + 320 + 11 = 666.

It is an interprime number because it is at equal distance from previous prime (231101332009) and next prime (231101332013).

It is not a de Polignac number, because 231101332011 - 2¹ = 231101332009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231101332013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6576706 + ... + 6611751.

It is an arithmetic number, because the mean of its divisors is an integer number (11869612200).

Almost surely, 2^231101332011 is an apocalyptic number.

231101332011 is a deficient number, since it is larger than the sum of its proper divisors (148726258389).

231101332011 is a wasteful number, since it uses less digits than its factorization.

231101332011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13188536 (or 13188530 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 231101332011 its reverse (110233101132), we get a palindrome (341334433143).

The spelling of 231101332011 in words is "two hundred thirty-one billion, one hundred one million, three hundred thirty-two thousand, eleven".