243120141431 has 2 divisors, whose sum is σ = 243120141432. Its totient is φ = 243120141430.

The previous prime is 243120141401. The next prime is 243120141557. The reversal of 243120141431 is 134141021342.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243120141431 is a prime.

It is a super-2 number, since 2×243120141431² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 243120141431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243120141401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121560070715 + 121560070716.

It is an arithmetic number, because the mean of its divisors is an integer number (121560070716).

Almost surely, 2^243120141431 is an apocalyptic number.

243120141431 is a deficient number, since it is larger than the sum of its proper divisors (1).

243120141431 is an equidigital number, since it uses as much as digits as its factorization.

243120141431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 243120141431 its reverse (134141021342), we get a palindrome (377261162773).

The spelling of 243120141431 in words is "two hundred forty-three billion, one hundred twenty million, one hundred forty-one thousand, four hundred thirty-one".