312111322 has 8 divisors (see below), whose sum is σ = 468448596. Its totient is φ = 155961792.

The previous prime is 312111307. The next prime is 312111323. The reversal of 312111322 is 223111213.

It can be written as a sum of positive squares in 2 ways, for example, as 275858881 + 36252441 = 16609^2 + 6021^2 .

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 = 312111296 and 312111305.

It is not an unprimeable number, because it can be changed into a prime (312111323) 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, 42703 + ... + 49474.

Almost surely, 2^312111322 is an apocalyptic number.

312111322 is a deficient number, since it is larger than the sum of its proper divisors (156337274).

312111322 is a wasteful number, since it uses less digits than its factorization.

312111322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93872.

The product of its digits is 72, while the sum is 16.

The square root of 312111322 is about 17666.6726352191. The cubic root of 312111322 is about 678.3229449169.

Adding to 312111322 its reverse (223111213), we get a palindrome (535222535).

The spelling of 312111322 in words is "three hundred twelve million, one hundred eleven thousand, three hundred twenty-two".