231131201 has 16 divisors (see below), whose sum is σ = 281180160. Its totient is φ = 185464320.

The previous prime is 231131191. The next prime is 231131207. The reversal of 231131201 is 102131132.

It is a cyclic number.

It is not a de Polignac number, because 231131201 - 2¹⁰ = 231130177 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (231131207) 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, 17645 + ... + 27813.

It is an arithmetic number, because the mean of its divisors is an integer number (17573760).

Almost surely, 2^231131201 is an apocalyptic number.

It is an amenable number.

231131201 is a deficient number, since it is larger than the sum of its proper divisors (50048959).

231131201 is a wasteful number, since it uses less digits than its factorization.

231131201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10384.

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

The square root of 231131201 is about 15202.9997368940. Note that the first 3 decimals coincide. The cubic root of 231131201 is about 613.6953867862.

Adding to 231131201 its reverse (102131132), we get a palindrome (333262333).

The spelling of 231131201 in words is "two hundred thirty-one million, one hundred thirty-one thousand, two hundred one".