201421312 has 20 divisors (see below), whose sum is σ = 402450246. Its totient is φ = 100710400.

The previous prime is 201421309. The next prime is 201421343. The reversal of 201421312 is 213124102.

It can be written as a sum of positive squares in only one way, i.e., 197796096 + 3625216 = 14064^2 + 1904^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 196189 + ... + 197212.

Almost surely, 2^201421312 is an apocalyptic number.

It is an amenable number.

201421312 is a deficient number, since it is larger than the sum of its proper divisors (201028934).

201421312 is an frugal number, since it uses more digits than its factorization.

201421312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393419 (or 393403 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 201421312 is about 14192.2976293481. The cubic root of 201421312 is about 586.1855927655.

Adding to 201421312 its reverse (213124102), we get a palindrome (414545414).

The spelling of 201421312 in words is "two hundred one million, four hundred twenty-one thousand, three hundred twelve".