231405201 has 8 divisors (see below), whose sum is σ = 342822560. Its totient is φ = 154270116.

The previous prime is 231405179. The next prime is 231405211. The reversal of 231405201 is 102504132.

231405201 is a `hidden beast` number, since 2 + 3 + 140 + 520 + 1 = 666.

It is not a de Polignac number, because 231405201 - 2⁶ = 231405137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231405211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4285255 + ... + 4285308.

It is an arithmetic number, because the mean of its divisors is an integer number (42852820).

Almost surely, 2^231405201 is an apocalyptic number.

It is an amenable number.

231405201 is a deficient number, since it is larger than the sum of its proper divisors (111417359).

231405201 is an equidigital number, since it uses as much as digits as its factorization.

231405201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8570572 (or 8570566 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 231405201 is about 15212.0084472761. The cubic root of 231405201 is about 613.9377976365.

Adding to 231405201 its reverse (102504132), we get a palindrome (333909333).

The spelling of 231405201 in words is "two hundred thirty-one million, four hundred five thousand, two hundred one".