201331388 has 12 divisors (see below), whose sum is σ = 352560432. Its totient is φ = 100599840.

The previous prime is 201331343. The next prime is 201331399. The reversal of 201331388 is 883133102.

It is a self number, because there is not a number n which added to its sum of digits gives 201331388.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9233 + ... + 22088.

It is an arithmetic number, because the mean of its divisors is an integer number (29380036).

Almost surely, 2^201331388 is an apocalyptic number.

It is an amenable number.

201331388 is a deficient number, since it is larger than the sum of its proper divisors (151229044).

201331388 is a wasteful number, since it uses less digits than its factorization.

201331388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32932 (or 32930 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 201331388 is about 14189.1292192298. The cubic root of 201331388 is about 586.0983461230.

The spelling of 201331388 in words is "two hundred one million, three hundred thirty-one thousand, three hundred eighty-eight".