312011201 has 4 divisors (see below), whose sum is σ = 312506304. Its totient is φ = 311516100.

The previous prime is 312011171. The next prime is 312011207. The reversal of 312011201 is 102110213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 102110213 = 41 ⋅2490493.

It is a cyclic number.

It is not a de Polignac number, because 312011201 - 2⁶ = 312011137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312011207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 246605 + ... + 247866.

It is an arithmetic number, because the mean of its divisors is an integer number (78126576).

Almost surely, 2^312011201 is an apocalyptic number.

It is an amenable number.

312011201 is a deficient number, since it is larger than the sum of its proper divisors (495103).

312011201 is an equidigital number, since it uses as much as digits as its factorization.

312011201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495102.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 312011201 is about 17663.8387956865. The cubic root of 312011201 is about 678.2504049500.

Adding to 312011201 its reverse (102110213), we get a palindrome (414121414).

The spelling of 312011201 in words is "three hundred twelve million, eleven thousand, two hundred one".