312102243 has 6 divisors (see below), whose sum is σ = 450814364. Its totient is φ = 208068156.

The previous prime is 312102233. The next prime is 312102251. The reversal of 312102243 is 342201213.

It is not a de Polignac number, because 312102243 - 2⁵ = 312102211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312102233) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17339005 + ... + 17339022.

Almost surely, 2^312102243 is an apocalyptic number.

312102243 is a deficient number, since it is larger than the sum of its proper divisors (138712121).

312102243 is a wasteful number, since it uses less digits than its factorization.

312102243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34678033 (or 34678030 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 312102243 is about 17666.4156806071. The cubic root of 312102243 is about 678.3163676122.

Adding to 312102243 its reverse (342201213), we get a palindrome (654303456).

The spelling of 312102243 in words is "three hundred twelve million, one hundred two thousand, two hundred forty-three".