243001222154319 has 4 divisors (see below), whose sum is σ = 324001629539096. Its totient is φ = 162000814769544.

The previous prime is 243001222154311. The next prime is 243001222154359. The reversal of 243001222154319 is 913451222100342.

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

It is not a de Polignac number, because 243001222154319 - 2³ = 243001222154311 is a prime.

It is a super-2 number, since 2×243001222154319² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243001222154311) 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, 40500203692384 + ... + 40500203692389.

It is an arithmetic number, because the mean of its divisors is an integer number (81000407384774).

Almost surely, 2^{243001222154319} is an apocalyptic number.

243001222154319 is a deficient number, since it is larger than the sum of its proper divisors (81000407384777).

243001222154319 is an equidigital number, since it uses as much as digits as its factorization.

243001222154319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81000407384776.

The product of its (nonzero) digits is 103680, while the sum is 39.

The spelling of 243001222154319 in words is "two hundred forty-three trillion, one billion, two hundred twenty-two million, one hundred fifty-four thousand, three hundred nineteen".