243212469 has 4 divisors (see below), whose sum is σ = 324283296. Its totient is φ = 162141644.

The previous prime is 243212467. The next prime is 243212471. The reversal of 243212469 is 964212342.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (243212467) and next prime (243212471).

It is a cyclic number.

It is not a de Polignac number, because 243212469 - 2¹ = 243212467 is a prime.

It is a super-2 number, since 2×243212469² = 118304610154151922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243212467) 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, 40535409 + ... + 40535414.

It is an arithmetic number, because the mean of its divisors is an integer number (81070824).

Almost surely, 2^243212469 is an apocalyptic number.

It is an amenable number.

243212469 is a deficient number, since it is larger than the sum of its proper divisors (81070827).

243212469 is an equidigital number, since it uses as much as digits as its factorization.

243212469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81070826.

The product of its digits is 20736, while the sum is 33.

The square root of 243212469 is about 15595.2707254475. The cubic root of 243212469 is about 624.2069677320.

The spelling of 243212469 in words is "two hundred forty-three million, two hundred twelve thousand, four hundred sixty-nine".