43101881 has 2 divisors, whose sum is σ = 43101882. Its totient is φ = 43101880.

The previous prime is 43101841. The next prime is 43101887. The reversal of 43101881 is 18810134.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28783225 + 14318656 = 5365^2 + 3784^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43101881 is a prime.

It is a super-2 number, since 2×43101881² = 3715544291476322, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 43101881.

It is not a weakly prime, because it can be changed into another prime (43101887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21550940 + 21550941.

It is an arithmetic number, because the mean of its divisors is an integer number (21550941).

Almost surely, 2^43101881 is an apocalyptic number.

It is an amenable number.

43101881 is a deficient number, since it is larger than the sum of its proper divisors (1).

43101881 is an equidigital number, since it uses as much as digits as its factorization.

43101881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 26.

The square root of 43101881 is about 6565.2022817275. The cubic root of 43101881 is about 350.6162774914.

The spelling of 43101881 in words is "forty-three million, one hundred one thousand, eight hundred eighty-one".