231220130011 has 16 divisors (see below), whose sum is σ = 255779782048. Its totient is φ = 207630086400.

The previous prime is 231220129991. The next prime is 231220130069. The reversal of 231220130011 is 110031022132.

It is a cyclic number.

It is not a de Polignac number, because 231220130011 - 2¹³ = 231220121819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231220170011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3021856 + ... + 3097426.

It is an arithmetic number, because the mean of its divisors is an integer number (15986236378).

Almost surely, 2^231220130011 is an apocalyptic number.

231220130011 is a deficient number, since it is larger than the sum of its proper divisors (24559652037).

231220130011 is a wasteful number, since it uses less digits than its factorization.

231220130011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81982.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 231220130011 its reverse (110031022132), we get a palindrome (341251152143).

The spelling of 231220130011 in words is "two hundred thirty-one billion, two hundred twenty million, one hundred thirty thousand, eleven".