201420331 has 24 divisors (see below), whose sum is σ = 242521776. Its totient is φ = 166682880.

The previous prime is 201420253. The next prime is 201420343. The reversal of 201420331 is 133024102.

It is a happy number.

It is not a de Polignac number, because 201420331 - 2¹³ = 201412139 is a prime.

It is a super-2 number, since 2×201420331² = 81140299480299122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (201420371) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 214495 + ... + 215431.

It is an arithmetic number, because the mean of its divisors is an integer number (10105074).

Almost surely, 2^201420331 is an apocalyptic number.

201420331 is a deficient number, since it is larger than the sum of its proper divisors (41101445).

201420331 is a wasteful number, since it uses less digits than its factorization.

201420331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1099 (or 1092 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 201420331 is about 14192.2630683059. The cubic root of 201420331 is about 586.1846411134.

Adding to 201420331 its reverse (133024102), we get a palindrome (334444433).

The spelling of 201420331 in words is "two hundred one million, four hundred twenty thousand, three hundred thirty-one".