312421423 has 2 divisors, whose sum is σ = 312421424. Its totient is φ = 312421422.

The previous prime is 312421391. The next prime is 312421433. The reversal of 312421423 is 324124213.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 312421423 - 2⁵ = 312421391 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 312421394 and 312421403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312421433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156210711 + 156210712.

It is an arithmetic number, because the mean of its divisors is an integer number (156210712).

Almost surely, 2^312421423 is an apocalyptic number.

312421423 is a deficient number, since it is larger than the sum of its proper divisors (1).

312421423 is an equidigital number, since it uses as much as digits as its factorization.

312421423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 22.

The square root of 312421423 is about 17675.4468967548. The cubic root of 312421423 is about 678.5475218360.

Adding to 312421423 its reverse (324124213), we get a palindrome (636545636).

The spelling of 312421423 in words is "three hundred twelve million, four hundred twenty-one thousand, four hundred twenty-three".