243121401241131 has 24 divisors (see below), whose sum is σ = 377088453915600. Its totient is φ = 138925704863232.

The previous prime is 243121401241049. The next prime is 243121401241153. The reversal of 243121401241131 is 131142104121342.

243121401241131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 243121401241131 - 2⁷ = 243121401241003 is a prime.

It is a super-2 number, since 2×243121401241131² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (243121401241171) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20938515 + ... + 30408291.

It is an arithmetic number, because the mean of its divisors is an integer number (15712018913150).

Almost surely, 2^{243121401241131} is an apocalyptic number.

243121401241131 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

243121401241131 is a deficient number, since it is larger than the sum of its proper divisors (133967052674469).

243121401241131 is a wasteful number, since it uses less digits than its factorization.

243121401241131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9644443 (or 9644436 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

Adding to 243121401241131 its reverse (131142104121342), we get a palindrome (374263505362473).

The spelling of 243121401241131 in words is "two hundred forty-three trillion, one hundred twenty-one billion, four hundred one million, two hundred forty-one thousand, one hundred thirty-one".