231301121 has 6 divisors (see below), whose sum is σ = 233937222. Its totient is φ = 228694400.

The previous prime is 231301027. The next prime is 231301123. The reversal of 231301121 is 121103132.

It can be written as a sum of positive squares in 3 ways, for example, as 261121 + 231040000 = 511^2 + 15200^2 .

It is a de Polignac number, because none of the positive numbers 2^k-231301121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231301096 and 231301105.

It is not an unprimeable number, because it can be changed into a prime (231301123) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6680 + ... + 22521.

It is an arithmetic number, because the mean of its divisors is an integer number (38989537).

Almost surely, 2^231301121 is an apocalyptic number.

It is an amenable number.

231301121 is a deficient number, since it is larger than the sum of its proper divisors (2636101).

231301121 is an frugal number, since it uses more digits than its factorization.

231301121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29379 (or 29290 counting only the distinct ones).

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

The square root of 231301121 is about 15208.5870809882. The cubic root of 231301121 is about 613.8457394516.

Adding to 231301121 its reverse (121103132), we get a palindrome (352404253).

The spelling of 231301121 in words is "two hundred thirty-one million, three hundred one thousand, one hundred twenty-one".