312210123 has 24 divisors (see below), whose sum is σ = 430511040. Its totient is φ = 201199680.

The previous prime is 312210113. The next prime is 312210137. The reversal of 312210123 is 321012213.

It is not a de Polignac number, because 312210123 - 2⁵ = 312210091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (312210113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 943068 + ... + 943398.

It is an arithmetic number, because the mean of its divisors is an integer number (17937960).

Almost surely, 2^312210123 is an apocalyptic number.

312210123 is a deficient number, since it is larger than the sum of its proper divisors (118300917).

312210123 is an equidigital number, since it uses as much as digits as its factorization.

312210123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539 (or 466 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 312210123 is about 17669.4686677331. The cubic root of 312210123 is about 678.3945133072.

Adding to 312210123 its reverse (321012213), we get a palindrome (633222336).

The spelling of 312210123 in words is "three hundred twelve million, two hundred ten thousand, one hundred twenty-three".