420201231 has 4 divisors (see below), whose sum is σ = 560268312. Its totient is φ = 280134152.

The previous prime is 420201163. The next prime is 420201239. The reversal of 420201231 is 132102024.

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

It is a cyclic number.

It is not a de Polignac number, because 420201231 - 2⁹ = 420200719 is a prime.

It is a super-2 number, since 2×420201231² = 353138149067830722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 420201231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420201239) 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, 70033536 + ... + 70033541.

It is an arithmetic number, because the mean of its divisors is an integer number (140067078).

Almost surely, 2^420201231 is an apocalyptic number.

420201231 is a deficient number, since it is larger than the sum of its proper divisors (140067081).

420201231 is a wasteful number, since it uses less digits than its factorization.

420201231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140067080.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 420201231 is about 20498.8104776838. The cubic root of 420201231 is about 749.0068222668.

Adding to 420201231 its reverse (132102024), we get a palindrome (552303255).

The spelling of 420201231 in words is "four hundred twenty million, two hundred one thousand, two hundred thirty-one".