312325421 has 2 divisors, whose sum is σ = 312325422. Its totient is φ = 312325420.

The previous prime is 312325373. The next prime is 312325423. The reversal of 312325421 is 124523213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 307616521 + 4708900 = 17539^2 + 2170^2 .

It is an emirp because it is prime and its reverse (124523213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 312325421 - 2⁶ = 312325357 is a prime.

Together with 312325423, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312325423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156162710 + 156162711.

It is an arithmetic number, because the mean of its divisors is an integer number (156162711).

Almost surely, 2^312325421 is an apocalyptic number.

It is an amenable number.

312325421 is a deficient number, since it is larger than the sum of its proper divisors (1).

312325421 is an equidigital number, since it uses as much as digits as its factorization.

312325421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 23.

The square root of 312325421 is about 17672.7310000464. The cubic root of 312325421 is about 678.4780125260.

Adding to 312325421 its reverse (124523213), we get a palindrome (436848634).

The spelling of 312325421 in words is "three hundred twelve million, three hundred twenty-five thousand, four hundred twenty-one".