231106201 has 4 divisors (see below), whose sum is σ = 231262900. Its totient is φ = 230949504.

The previous prime is 231106199. The next prime is 231106243. The reversal of 231106201 is 102601132.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15721225 + 215384976 = 3965^2 + 14676^2 .

It is a cyclic number.

It is not a de Polignac number, because 231106201 - 2¹ = 231106199 is a prime.

It is a super-2 number, since 2×231106201² = 106820152281304802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231106261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76116 + ... + 79093.

It is an arithmetic number, because the mean of its divisors is an integer number (57815725).

Almost surely, 2^231106201 is an apocalyptic number.

It is an amenable number.

231106201 is a deficient number, since it is larger than the sum of its proper divisors (156699).

231106201 is a wasteful number, since it uses less digits than its factorization.

231106201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156698.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 231106201 is about 15202.1775085019. The cubic root of 231106201 is about 613.6732594724.

Adding to 231106201 its reverse (102601132), we get a palindrome (333707333).

The spelling of 231106201 in words is "two hundred thirty-one million, one hundred six thousand, two hundred one".