312214021 has 8 divisors (see below), whose sum is σ = 357666944. Its totient is φ = 266973840.

The previous prime is 312213991. The next prime is 312214031. The reversal of 312214021 is 120412213.

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

It is not a de Polignac number, because 312214021 - 2⁹ = 312213509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312213986 and 312214004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312214031) 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, 50025 + ... + 55918.

It is an arithmetic number, because the mean of its divisors is an integer number (44708368).

Almost surely, 2^312214021 is an apocalyptic number.

It is an amenable number.

312214021 is a deficient number, since it is larger than the sum of its proper divisors (45452923).

312214021 is a wasteful number, since it uses less digits than its factorization.

312214021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106371.

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

The square root of 312214021 is about 17669.5789706490. The cubic root of 312214021 is about 678.3973365883.

Adding to 312214021 its reverse (120412213), we get a palindrome (432626234).

The spelling of 312214021 in words is "three hundred twelve million, two hundred fourteen thousand, twenty-one".