312103013122 has 4 divisors (see below), whose sum is σ = 468154519686. Its totient is φ = 156051506560.

The previous prime is 312103013113. The next prime is 312103013213. The reversal of 312103013122 is 221310301213.

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., 270869243401 + 41233769721 = 520451^2 + 203061^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 312103013122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78025753279 + ... + 78025753282.

Almost surely, 2^312103013122 is an apocalyptic number.

312103013122 is a deficient number, since it is larger than the sum of its proper divisors (156051506564).

312103013122 is a wasteful number, since it uses less digits than its factorization.

312103013122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156051506563.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 312103013122 its reverse (221310301213), we get a palindrome (533413314335).

The spelling of 312103013122 in words is "three hundred twelve billion, one hundred three million, thirteen thousand, one hundred twenty-two".