231321101 has 16 divisors (see below), whose sum is σ = 261273600. Its totient is φ = 202897200.

The previous prime is 231321073. The next prime is 231321107. The reversal of 231321101 is 101123132.

It is not a de Polignac number, because 231321101 - 2¹⁰ = 231320077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231321107) 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, 142070 + ... + 143688.

It is an arithmetic number, because the mean of its divisors is an integer number (16329600).

Almost surely, 2^231321101 is an apocalyptic number.

It is an amenable number.

231321101 is a deficient number, since it is larger than the sum of its proper divisors (29952499).

231321101 is a wasteful number, since it uses less digits than its factorization.

231321101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2080.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 231321101 is about 15209.2439325563. The cubic root of 231321101 is about 613.8634137927.

Adding to 231321101 its reverse (101123132), we get a palindrome (332444233).

The spelling of 231321101 in words is "two hundred thirty-one million, three hundred twenty-one thousand, one hundred one".