311212001 has 8 divisors (see below), whose sum is σ = 328715520. Its totient is φ = 293820912.

The previous prime is 311211997. The next prime is 311212037. The reversal of 311212001 is 100212113.

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 311212001 - 2² = 311211997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311212201) 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, 22385 + ... + 33518.

It is an arithmetic number, because the mean of its divisors is an integer number (41089440).

Almost surely, 2^311212001 is an apocalyptic number.

It is an amenable number.

311212001 is a deficient number, since it is larger than the sum of its proper divisors (17503519).

311212001 is a wasteful number, since it uses less digits than its factorization.

311212001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56215.

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

The square root of 311212001 is about 17641.2018014647. The cubic root of 311212001 is about 677.6708090905.

Adding to 311212001 its reverse (100212113), we get a palindrome (411424114).

The spelling of 311212001 in words is "three hundred eleven million, two hundred twelve thousand, one".