73301381 has 2 divisors, whose sum is σ = 73301382. Its totient is φ = 73301380.

The previous prime is 73301359. The next prime is 73301387. The reversal of 73301381 is 18310337.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72165025 + 1136356 = 8495^2 + 1066^2 .

It is an emirp because it is prime and its reverse (18310337) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73301381 - 2¹⁴ = 73284997 is a prime.

It is a super-2 number, since 2×73301381² = 10746184913014322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 73301381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73301387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36650690 + 36650691.

It is an arithmetic number, because the mean of its divisors is an integer number (36650691).

Almost surely, 2^73301381 is an apocalyptic number.

It is an amenable number.

73301381 is a deficient number, since it is larger than the sum of its proper divisors (1).

73301381 is an equidigital number, since it uses as much as digits as its factorization.

73301381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 73301381 is about 8561.6225681818. The cubic root of 73301381 is about 418.5082776314.

The spelling of 73301381 in words is "seventy-three million, three hundred one thousand, three hundred eighty-one".