243423231131 has 2 divisors, whose sum is σ = 243423231132. Its totient is φ = 243423231130.

The previous prime is 243423231119. The next prime is 243423231137. The reversal of 243423231131 is 131132324342.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 243423231131 - 2²² = 243419036827 is a prime.

It is a super-2 number, since 2×243423231131² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 243423231094 and 243423231103.

It is not a weakly prime, because it can be changed into another prime (243423231137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121711615565 + 121711615566.

It is an arithmetic number, because the mean of its divisors is an integer number (121711615566).

Almost surely, 2^243423231131 is an apocalyptic number.

243423231131 is a deficient number, since it is larger than the sum of its proper divisors (1).

243423231131 is an equidigital number, since it uses as much as digits as its factorization.

243423231131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 29.

Adding to 243423231131 its reverse (131132324342), we get a palindrome (374555555473).

The spelling of 243423231131 in words is "two hundred forty-three billion, four hundred twenty-three million, two hundred thirty-one thousand, one hundred thirty-one".