43143461 has 2 divisors, whose sum is σ = 43143462. Its totient is φ = 43143460.

The previous prime is 43143437. The next prime is 43143473. The reversal of 43143461 is 16434134.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38812900 + 4330561 = 6230^2 + 2081^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43143461 is a prime.

It is a super-2 number, since 2×43143461² = 3722716454117042, which contains 22 as substring.

It is equal to p_2612681 and since 43143461 and 2612681 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 43143461.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43143421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21571730 + 21571731.

It is an arithmetic number, because the mean of its divisors is an integer number (21571731).

Almost surely, 2^43143461 is an apocalyptic number.

It is an amenable number.

43143461 is a deficient number, since it is larger than the sum of its proper divisors (1).

43143461 is an equidigital number, since it uses as much as digits as its factorization.

43143461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 26.

The square root of 43143461 is about 6568.3682144045. The cubic root of 43143461 is about 350.7289867208.

Adding to 43143461 its reverse (16434134), we get a palindrome (59577595).

The spelling of 43143461 in words is "forty-three million, one hundred forty-three thousand, four hundred sixty-one".