243432143401 has 2 divisors, whose sum is σ = 243432143402. Its totient is φ = 243432143400.

The previous prime is 243432143393. The next prime is 243432143407. The reversal of 243432143401 is 104341234342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 242226387225 + 1205756176 = 492165^2 + 34724^2 .

It is a cyclic number.

It is not a de Polignac number, because 243432143401 - 2³ = 243432143393 is a prime.

It is a super-3 number, since 3×243432143401³ (a number of 35 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (243432143407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121716071700 + 121716071701.

It is an arithmetic number, because the mean of its divisors is an integer number (121716071701).

Almost surely, 2^243432143401 is an apocalyptic number.

It is an amenable number.

243432143401 is a deficient number, since it is larger than the sum of its proper divisors (1).

243432143401 is an equidigital number, since it uses as much as digits as its factorization.

243432143401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 243432143401 its reverse (104341234342), we get a palindrome (347773377743).

The spelling of 243432143401 in words is "two hundred forty-three billion, four hundred thirty-two million, one hundred forty-three thousand, four hundred one".