231241220011 has 16 divisors (see below), whose sum is σ = 242936493408. Its totient is φ = 219866400000.

The previous prime is 231241220003. The next prime is 231241220069. The reversal of 231241220011 is 110022142132.

It is a cyclic number.

It is not a de Polignac number, because 231241220011 - 2³ = 231241220003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231241220071) 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, 257311 + ... + 727111.

It is an arithmetic number, because the mean of its divisors is an integer number (15183530838).

Almost surely, 2^231241220011 is an apocalyptic number.

231241220011 is a deficient number, since it is larger than the sum of its proper divisors (11695273397).

231241220011 is a wasteful number, since it uses less digits than its factorization.

231241220011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470142.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 231241220011 its reverse (110022142132), we get a palindrome (341263362143).

The spelling of 231241220011 in words is "two hundred thirty-one billion, two hundred forty-one million, two hundred twenty thousand, eleven".