43213301381 has 2 divisors, whose sum is σ = 43213301382. Its totient is φ = 43213301380.

The previous prime is 43213301359. The next prime is 43213301423. The reversal of 43213301381 is 18310331234.

43213301381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29638721281 + 13574580100 = 172159^2 + 116510^2 .

It is a cyclic number.

It is not a de Polignac number, because 43213301381 - 2²⁶ = 43146192517 is a prime.

It is a super-2 number, since 2×43213301381² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43213301981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21606650690 + 21606650691.

It is an arithmetic number, because the mean of its divisors is an integer number (21606650691).

Almost surely, 2^43213301381 is an apocalyptic number.

It is an amenable number.

43213301381 is a deficient number, since it is larger than the sum of its proper divisors (1).

43213301381 is an equidigital number, since it uses as much as digits as its factorization.

43213301381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 29.

The spelling of 43213301381 in words is "forty-three billion, two hundred thirteen million, three hundred one thousand, three hundred eighty-one".