312201331 has 8 divisors (see below), whose sum is σ = 353912720. Its totient is φ = 273017952.

The previous prime is 312201313. The next prime is 312201353. The reversal of 312201331 is 133102213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 312201331 - 2⁵ = 312201299 is a prime.

It is a super-2 number, since 2×312201331² = 194939342156343122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312201361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 631740 + ... + 632233.

It is an arithmetic number, because the mean of its divisors is an integer number (44239090).

Almost surely, 2^312201331 is an apocalyptic number.

312201331 is a deficient number, since it is larger than the sum of its proper divisors (41711389).

312201331 is a wasteful number, since it uses less digits than its factorization.

312201331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1264005.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 312201331 is about 17669.2198752520. The cubic root of 312201331 is about 678.3881452662.

Adding to 312201331 its reverse (133102213), we get a palindrome (445303544).

The spelling of 312201331 in words is "three hundred twelve million, two hundred one thousand, three hundred thirty-one".