312421103 has 4 divisors (see below), whose sum is σ = 313321800. Its totient is φ = 311520408.

The previous prime is 312421097. The next prime is 312421111. The reversal of 312421103 is 301124213.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 312421103 - 2¹⁰ = 312420079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312421163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 449828 + ... + 450521.

It is an arithmetic number, because the mean of its divisors is an integer number (78330450).

Almost surely, 2^312421103 is an apocalyptic number.

312421103 is a deficient number, since it is larger than the sum of its proper divisors (900697).

312421103 is an equidigital number, since it uses as much as digits as its factorization.

312421103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900696.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 312421103 is about 17675.4378446476. The cubic root of 312421103 is about 678.5472901668.

Adding to 312421103 its reverse (301124213), we get a palindrome (613545316).

The spelling of 312421103 in words is "three hundred twelve million, four hundred twenty-one thousand, one hundred three".