312123412123 has 2 divisors, whose sum is σ = 312123412124. Its totient is φ = 312123412122.

The previous prime is 312123412103. The next prime is 312123412147. The reversal of 312123412123 is 321214321213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 312123412123 - 2²¹ = 312121314971 is a prime.

It is not a weakly prime, because it can be changed into another prime (312123412103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156061706061 + 156061706062.

It is an arithmetic number, because the mean of its divisors is an integer number (156061706062).

Almost surely, 2^312123412123 is an apocalyptic number.

312123412123 is a deficient number, since it is larger than the sum of its proper divisors (1).

312123412123 is an equidigital number, since it uses as much as digits as its factorization.

312123412123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 25.

Adding to 312123412123 its reverse (321214321213), we get a palindrome (633337733336).

The spelling of 312123412123 in words is "three hundred twelve billion, one hundred twenty-three million, four hundred twelve thousand, one hundred twenty-three".