231022201 has 2 divisors, whose sum is σ = 231022202. Its totient is φ = 231022200.

The previous prime is 231022193. The next prime is 231022217. The reversal of 231022201 is 102220132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 222606400 + 8415801 = 14920^2 + 2901^2 .

It is a cyclic number.

It is not a de Polignac number, because 231022201 - 2³ = 231022193 is a prime.

It is not a weakly prime, because it can be changed into another prime (231022291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115511100 + 115511101.

It is an arithmetic number, because the mean of its divisors is an integer number (115511101).

Almost surely, 2^231022201 is an apocalyptic number.

It is an amenable number.

231022201 is a deficient number, since it is larger than the sum of its proper divisors (1).

231022201 is an equidigital number, since it uses as much as digits as its factorization.

231022201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 231022201 is about 15199.4144953021. The cubic root of 231022201 is about 613.5989000072.

Adding to 231022201 its reverse (102220132), we get a palindrome (333242333).

The spelling of 231022201 in words is "two hundred thirty-one million, twenty-two thousand, two hundred one".