231021321411 has 16 divisors (see below), whose sum is σ = 309647362464. Its totient is φ = 153205027584.

The previous prime is 231021321407. The next prime is 231021321469. The reversal of 231021321411 is 114123120132.

It is not a de Polignac number, because 231021321411 - 2² = 231021321407 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231021321481) 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, 3592735 + ... + 3656471.

It is an arithmetic number, because the mean of its divisors is an integer number (19352960154).

Almost surely, 2^231021321411 is an apocalyptic number.

231021321411 is a deficient number, since it is larger than the sum of its proper divisors (78626041053).

231021321411 is a wasteful number, since it uses less digits than its factorization.

231021321411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70070.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 231021321411 its reverse (114123120132), we get a palindrome (345144441543).

The spelling of 231021321411 in words is "two hundred thirty-one billion, twenty-one million, three hundred twenty-one thousand, four hundred eleven".