73381117 has 2 divisors, whose sum is σ = 73381118. Its totient is φ = 73381116.

The previous prime is 73381079. The next prime is 73381151. The reversal of 73381117 is 71118337.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73376356 + 4761 = 8566^2 + 69^2 .

It is a cyclic number.

It is not a de Polignac number, because 73381117 - 2¹¹ = 73379069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73381157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36690558 + 36690559.

It is an arithmetic number, because the mean of its divisors is an integer number (36690559).

Almost surely, 2^73381117 is an apocalyptic number.

It is an amenable number.

73381117 is a deficient number, since it is larger than the sum of its proper divisors (1).

73381117 is an equidigital number, since it uses as much as digits as its factorization.

73381117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3528, while the sum is 31.

The square root of 73381117 is about 8566.2778964962. The cubic root of 73381117 is about 418.6599713787.

The spelling of 73381117 in words is "seventy-three million, three hundred eighty-one thousand, one hundred seventeen".