201023320 has 32 divisors (see below), whose sum is σ = 453046320. Its totient is φ = 80277120.

The previous prime is 201023297. The next prime is 201023353. The reversal of 201023320 is 23320102.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 201023320.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22639 + ... + 30241.

Almost surely, 2^201023320 is an apocalyptic number.

201023320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201023320 is an abundant number, since it is smaller than the sum of its proper divisors (252023000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201023320 is a wasteful number, since it uses less digits than its factorization.

201023320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8275 (or 8271 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 201023320 is about 14178.2692878927. The cubic root of 201023320 is about 585.7992533033.

Adding to 201023320 its reverse (23320102), we get a palindrome (224343422).

The spelling of 201023320 in words is "two hundred one million, twenty-three thousand, three hundred twenty".