312221223097 has 16 divisors (see below), whose sum is σ = 358906844160. Its totient is φ = 266056994448.

The previous prime is 312221223079. The next prime is 312221223113. The reversal of 312221223097 is 790322122213.

It is not a de Polignac number, because 312221223097 - 2⁷ = 312221222969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312221223077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5392938 + ... + 5450524.

It is an arithmetic number, because the mean of its divisors is an integer number (22431677760).

Almost surely, 2^312221223097 is an apocalyptic number.

It is an amenable number.

312221223097 is a deficient number, since it is larger than the sum of its proper divisors (46685621063).

312221223097 is a wasteful number, since it uses less digits than its factorization.

312221223097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62100.

The product of its (nonzero) digits is 18144, while the sum is 34.

The spelling of 312221223097 in words is "three hundred twelve billion, two hundred twenty-one million, two hundred twenty-three thousand, ninety-seven".