312103222420 has 48 divisors (see below), whose sum is σ = 723033864000. Its totient is φ = 112216881920.

The previous prime is 312103222381. The next prime is 312103222439. The reversal of 312103222420 is 24222301213.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 312103222391 and 312103222400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7950370 + ... + 7989529.

It is an arithmetic number, because the mean of its divisors is an integer number (15063205500).

Almost surely, 2^312103222420 is an apocalyptic number.

It is an amenable number.

312103222420 is an abundant number, since it is smaller than the sum of its proper divisors (410930641580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

312103222420 is a wasteful number, since it uses less digits than its factorization.

312103222420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15940008 (or 15940006 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 312103222420 its reverse (24222301213), we get a palindrome (336325523633).

The spelling of 312103222420 in words is "three hundred twelve billion, one hundred three million, two hundred twenty-two thousand, four hundred twenty".