231552214211 has 4 divisors (see below), whose sum is σ = 245172932712. Its totient is φ = 217931495712.

The previous prime is 231552214121. The next prime is 231552214247. The reversal of 231552214211 is 112412255132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 231552214211 - 2²⁶ = 231485105347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231552214111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6810359225 + ... + 6810359258.

It is an arithmetic number, because the mean of its divisors is an integer number (61293233178).

Almost surely, 2^231552214211 is an apocalyptic number.

231552214211 is a deficient number, since it is larger than the sum of its proper divisors (13620718501).

231552214211 is a wasteful number, since it uses less digits than its factorization.

231552214211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13620718500.

The product of its digits is 4800, while the sum is 29.

Adding to 231552214211 its reverse (112412255132), we get a palindrome (343964469343).

The spelling of 231552214211 in words is "two hundred thirty-one billion, five hundred fifty-two million, two hundred fourteen thousand, two hundred eleven".