312112031122 has 4 divisors (see below), whose sum is σ = 468168046686. Its totient is φ = 156056015560.

The previous prime is 312112031081. The next prime is 312112031191. The reversal of 312112031122 is 221130211213.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 310562112961 + 1549918161 = 557281^2 + 39369^2 .

It is a super-2 number, since 2×312112031122² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 312112031122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78028007779 + ... + 78028007782.

Almost surely, 2^312112031122 is an apocalyptic number.

312112031122 is a deficient number, since it is larger than the sum of its proper divisors (156056015564).

312112031122 is a wasteful number, since it uses less digits than its factorization.

312112031122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156056015563.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 312112031122 its reverse (221130211213), we get a palindrome (533242242335).

The spelling of 312112031122 in words is "three hundred twelve billion, one hundred twelve million, thirty-one thousand, one hundred twenty-two".