201231330 has 32 divisors (see below), whose sum is σ = 483364800. Its totient is φ = 53616192.

The previous prime is 201231307. The next prime is 201231341. The reversal of 201231330 is 33132102.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48061 + ... + 52079.

It is an arithmetic number, because the mean of its divisors is an integer number (15105150).

Almost surely, 2^201231330 is an apocalyptic number.

201231330 is an abundant number, since it is smaller than the sum of its proper divisors (282133470).

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

201231330 is a wasteful number, since it uses less digits than its factorization.

201231330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5698.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 201231330 is about 14185.6029128127. The cubic root of 201231330 is about 586.0012366649.

Adding to 201231330 its reverse (33132102), we get a palindrome (234363432).

The spelling of 201231330 in words is "two hundred one million, two hundred thirty-one thousand, three hundred thirty".