312220127 has 4 divisors (see below), whose sum is σ = 322291776. Its totient is φ = 302148480.

The previous prime is 312220121. The next prime is 312220159. The reversal of 312220127 is 721022213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 721022213 = 3697 ⋅195029.

It is a cyclic number.

It is not a de Polignac number, because 312220127 - 2⁶ = 312220063 is a prime.

It is a super-2 number, since 2×312220127² = 194962815407792258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312220099 and 312220108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312220121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5035778 + ... + 5035839.

It is an arithmetic number, because the mean of its divisors is an integer number (80572944).

Almost surely, 2^312220127 is an apocalyptic number.

312220127 is a deficient number, since it is larger than the sum of its proper divisors (10071649).

312220127 is a wasteful number, since it uses less digits than its factorization.

312220127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10071648.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 312220127 is about 17669.7517526421. The cubic root of 312220127 is about 678.4017590537.

The spelling of 312220127 in words is "three hundred twelve million, two hundred twenty thousand, one hundred twenty-seven".