312211422 has 40 divisors (see below), whose sum is σ = 700659696. Its totient is φ = 103910688.

The previous prime is 312211391. The next prime is 312211441. The reversal of 312211422 is 224112213.

It is a happy number.

312211422 is a `hidden beast` number, since 31 + 2 + 211 + 422 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 312211395 and 312211404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 155658 + ... + 157650.

Almost surely, 2^312211422 is an apocalyptic number.

312211422 is an abundant number, since it is smaller than the sum of its proper divisors (388448274).

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

312211422 is a wasteful number, since it uses less digits than its factorization.

312211422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2974 (or 2965 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 312211422 is about 17669.5054260157. The cubic root of 312211422 is about 678.3954541621.

Adding to 312211422 its reverse (224112213), we get a palindrome (536323635).

The spelling of 312211422 in words is "three hundred twelve million, two hundred eleven thousand, four hundred twenty-two".