43192541321 has 2 divisors, whose sum is σ = 43192541322. Its totient is φ = 43192541320.

The previous prime is 43192541311. The next prime is 43192541417. The reversal of 43192541321 is 12314529134.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25593600400 + 17598940921 = 159980^2 + 132661^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43192541321 is a prime.

It is not a weakly prime, because it can be changed into another prime (43192541311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21596270660 + 21596270661.

It is an arithmetic number, because the mean of its divisors is an integer number (21596270661).

Almost surely, 2^43192541321 is an apocalyptic number.

It is an amenable number.

43192541321 is a deficient number, since it is larger than the sum of its proper divisors (1).

43192541321 is an equidigital number, since it uses as much as digits as its factorization.

43192541321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 35.

The spelling of 43192541321 in words is "forty-three billion, one hundred ninety-two million, five hundred forty-one thousand, three hundred twenty-one".