43430143261 has 2 divisors, whose sum is σ = 43430143262. Its totient is φ = 43430143260.

The previous prime is 43430143217. The next prime is 43430143291. The reversal of 43430143261 is 16234103434.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41049191236 + 2380952025 = 202606^2 + 48795^2 .

It is a cyclic number.

It is not a de Polignac number, because 43430143261 - 2¹⁷ = 43430012189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43430143291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21715071630 + 21715071631.

It is an arithmetic number, because the mean of its divisors is an integer number (21715071631).

Almost surely, 2^43430143261 is an apocalyptic number.

It is an amenable number.

43430143261 is a deficient number, since it is larger than the sum of its proper divisors (1).

43430143261 is an equidigital number, since it uses as much as digits as its factorization.

43430143261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 43430143261 its reverse (16234103434), we get a palindrome (59664246695).

The spelling of 43430143261 in words is "forty-three billion, four hundred thirty million, one hundred forty-three thousand, two hundred sixty-one".