231301221211 has 8 divisors (see below), whose sum is σ = 236193694784. Its totient is φ = 226451107080.

The previous prime is 231301221199. The next prime is 231301221223. The reversal of 231301221211 is 112122103132.

It is an interprime number because it is at equal distance from previous prime (231301221199) and next prime (231301221223).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 231301221211 - 2⁷ = 231301221083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231301251211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10578825 + ... + 10600666.

It is an arithmetic number, because the mean of its divisors is an integer number (29524211848).

Almost surely, 2^231301221211 is an apocalyptic number.

231301221211 is a deficient number, since it is larger than the sum of its proper divisors (4892473573).

231301221211 is a wasteful number, since it uses less digits than its factorization.

231301221211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21179721.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 231301221211 its reverse (112122103132), we get a palindrome (343423324343).

The spelling of 231301221211 in words is "two hundred thirty-one billion, three hundred one million, two hundred twenty-one thousand, two hundred eleven".