201023330 has 16 divisors (see below), whose sum is σ = 365426424. Its totient is φ = 79612800.

The previous prime is 201023297. The next prime is 201023353. The reversal of 201023330 is 33320102.

It can be written as a sum of positive squares in 4 ways, for example, as 186131449 + 14891881 = 13643^2 + 3859^2 .

It is a Curzon 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, 98507 + ... + 100526.

Almost surely, 2^201023330 is an apocalyptic number.

201023330 is a deficient number, since it is larger than the sum of its proper divisors (164403094).

201023330 is a wasteful number, since it uses less digits than its factorization.

201023330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199141.

The product of its (nonzero) digits is 108, while the sum is 14.

The square root of 201023330 is about 14178.2696405450. The cubic root of 201023330 is about 585.7992630169.

Adding to 201023330 its reverse (33320102), we get a palindrome (234343432).

It can be divided in two parts, 20102 and 3330, that added together give a palindrome (23432).

The spelling of 201023330 in words is "two hundred one million, twenty-three thousand, three hundred thirty".