312644222 has 8 divisors (see below), whose sum is σ = 511599672. Its totient is φ = 142111000.

The previous prime is 312644209. The next prime is 312644231. The reversal of 312644222 is 222446213.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 312644191 and 312644200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7105529 + ... + 7105572.

It is an arithmetic number, because the mean of its divisors is an integer number (63949959).

Almost surely, 2^312644222 is an apocalyptic number.

312644222 is a deficient number, since it is larger than the sum of its proper divisors (198955450).

312644222 is a wasteful number, since it uses less digits than its factorization.

312644222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14211114.

The product of its digits is 4608, while the sum is 26.

The square root of 312644222 is about 17681.7482732902. The cubic root of 312644222 is about 678.7087824232.

The spelling of 312644222 in words is "three hundred twelve million, six hundred forty-four thousand, two hundred twenty-two".