312213420243123 has 16 divisors (see below), whose sum is σ = 503739299888640. Its totient is φ = 167913099962496.

The previous prime is 312213420243121. The next prime is 312213420243161. The reversal of 312213420243123 is 321342024312213.

It is a happy number.

It is not a de Polignac number, because 312213420243123 - 2¹ = 312213420243121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (312213420243121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 437273697463 + ... + 437273698176.

It is an arithmetic number, because the mean of its divisors is an integer number (31483706243040).

Almost surely, 2^{312213420243123} is an apocalyptic number.

312213420243123 is a deficient number, since it is larger than the sum of its proper divisors (191525879645517).

312213420243123 is a wasteful number, since it uses less digits than its factorization.

312213420243123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874547395666.

The product of its (nonzero) digits is 41472, while the sum is 33.

Adding to 312213420243123 its reverse (321342024312213), we get a palindrome (633555444555336).

The spelling of 312213420243123 in words is "three hundred twelve trillion, two hundred thirteen billion, four hundred twenty million, two hundred forty-three thousand, one hundred twenty-three".