243319464007 has 4 divisors (see below), whose sum is σ = 243322096696. Its totient is φ = 243316831320.

The previous prime is 243319463983. The next prime is 243319464019. The reversal of 243319464007 is 700464913342.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 700464913342 = 2 ⋅350232456671.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243319464007 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 (243319464097) 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, 1172469 + ... + 1364302.

It is an arithmetic number, because the mean of its divisors is an integer number (60830524174).

Almost surely, 2^243319464007 is an apocalyptic number.

243319464007 is a deficient number, since it is larger than the sum of its proper divisors (2632689).

243319464007 is an equidigital number, since it uses as much as digits as its factorization.

243319464007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2632688.

The product of its (nonzero) digits is 435456, while the sum is 43.

The spelling of 243319464007 in words is "two hundred forty-three billion, three hundred nineteen million, four hundred sixty-four thousand, seven".