312161214 has 16 divisors (see below), whose sum is σ = 626547600. Its totient is φ = 103682880.

The previous prime is 312161197. The next prime is 312161233. The reversal of 312161214 is 412161213.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90889 + ... + 94260.

It is an arithmetic number, because the mean of its divisors is an integer number (39159225).

Almost surely, 2^312161214 is an apocalyptic number.

312161214 is an abundant number, since it is smaller than the sum of its proper divisors (314386386).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

312161214 is a wasteful number, since it uses less digits than its factorization.

312161214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185435.

The product of its digits is 288, while the sum is 21.

The square root of 312161214 is about 17668.0846160528. The cubic root of 312161214 is about 678.3590870269.

Subtracting 312161214 from its reverse (412161213), we obtain a palindrome (99999999).

The spelling of 312161214 in words is "three hundred twelve million, one hundred sixty-one thousand, two hundred fourteen".