312222111311 has 8 divisors (see below), whose sum is σ = 340636077264. Its totient is φ = 283813168320.

The previous prime is 312222111307. The next prime is 312222111337. The reversal of 312222111311 is 113111222213.

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

It is not a de Polignac number, because 312222111311 - 2² = 312222111307 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312222111811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1125176 + ... + 1374941.

It is an arithmetic number, because the mean of its divisors is an integer number (42579509658).

Almost surely, 2^312222111311 is an apocalyptic number.

312222111311 is a deficient number, since it is larger than the sum of its proper divisors (28413965953).

312222111311 is a wasteful number, since it uses less digits than its factorization.

312222111311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2511481.

The product of its digits is 144, while the sum is 20.

Adding to 312222111311 its reverse (113111222213), we get a palindrome (425333333524).

The spelling of 312222111311 in words is "three hundred twelve billion, two hundred twenty-two million, one hundred eleven thousand, three hundred eleven".