231330133101011 has 64 divisors (see below), whose sum is σ = 282563635722240. Its totient is φ = 185112782300160.

The previous prime is 231330133100939. The next prime is 231330133101017. The reversal of 231330133101011 is 110101331033132.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231330133101011 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231330133101017) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1139360375 + ... + 1139563391.

It is an arithmetic number, because the mean of its divisors is an integer number (4415056808160).

Almost surely, 2^{231330133101011} is an apocalyptic number.

231330133101011 is a deficient number, since it is larger than the sum of its proper divisors (51233502621229).

231330133101011 is a wasteful number, since it uses less digits than its factorization.

231330133101011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204004.

The product of its (nonzero) digits is 486, while the sum is 23.

Adding to 231330133101011 its reverse (110101331033132), we get a palindrome (341431464134143).

The spelling of 231330133101011 in words is "two hundred thirty-one trillion, three hundred thirty billion, one hundred thirty-three million, one hundred one thousand, eleven".