312435121 has 2 divisors, whose sum is σ = 312435122. Its totient is φ = 312435120.

The previous prime is 312435089. The next prime is 312435173. The reversal of 312435121 is 121534213.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 279257521 + 33177600 = 16711^2 + 5760^2 .

It is a cyclic number.

It is not a de Polignac number, because 312435121 - 2⁵ = 312435089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 312435092 and 312435101.

It is not a weakly prime, because it can be changed into another prime (312435421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156217560 + 156217561.

It is an arithmetic number, because the mean of its divisors is an integer number (156217561).

Almost surely, 2^312435121 is an apocalyptic number.

It is an amenable number.

312435121 is a deficient number, since it is larger than the sum of its proper divisors (1).

312435121 is an equidigital number, since it uses as much as digits as its factorization.

312435121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 720, while the sum is 22.

The square root of 312435121 is about 17675.8343791743. The cubic root of 312435121 is about 678.5574385782.

Adding to 312435121 its reverse (121534213), we get a palindrome (433969334).

The spelling of 312435121 in words is "three hundred twelve million, four hundred thirty-five thousand, one hundred twenty-one".