243315001351 has 4 divisors (see below), whose sum is σ = 244537690000. Its totient is φ = 242092312704.

The previous prime is 243315001343. The next prime is 243315001379. The reversal of 243315001351 is 153100513342.

It is a happy number.

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 243315001351 - 2³ = 243315001343 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 (243315001751) 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, 611344026 + ... + 611344423.

It is an arithmetic number, because the mean of its divisors is an integer number (61134422500).

Almost surely, 2^243315001351 is an apocalyptic number.

243315001351 is a deficient number, since it is larger than the sum of its proper divisors (1222688649).

243315001351 is a wasteful number, since it uses less digits than its factorization.

243315001351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1222688648.

The product of its (nonzero) digits is 5400, while the sum is 28.

Adding to 243315001351 its reverse (153100513342), we get a palindrome (396415514693).

The spelling of 243315001351 in words is "two hundred forty-three billion, three hundred fifteen million, one thousand, three hundred fifty-one".