243001000211331 has 16 divisors (see below), whose sum is σ = 342610379532288. Its totient is φ = 152951062286400.

The previous prime is 243001000211279. The next prime is 243001000211339. The reversal of 243001000211331 is 133112000100342.

It is not a de Polignac number, because 243001000211331 - 2²² = 243000996017027 is a prime.

It is a super-2 number, since 2×243001000211331² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 243001000211298 and 243001000211307.

It is not an unprimeable number, because it can be changed into a prime (243001000211339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31864800831 + ... + 31864808456.

It is an arithmetic number, because the mean of its divisors is an integer number (21413148720768).

Almost surely, 2^{243001000211331} is an apocalyptic number.

243001000211331 is a deficient number, since it is larger than the sum of its proper divisors (99609379320957).

243001000211331 is a wasteful number, since it uses less digits than its factorization.

243001000211331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63729609362.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 243001000211331 its reverse (133112000100342), we get a palindrome (376113000311673).

The spelling of 243001000211331 in words is "two hundred forty-three trillion, one billion, two hundred eleven thousand, three hundred thirty-one".