83178313 has 2 divisors, whose sum is σ = 83178314. Its totient is φ = 83178312.

The previous prime is 83178187. The next prime is 83178323. The reversal of 83178313 is 31387138.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83028544 + 149769 = 9112^2 + 387^2 .

It is a cyclic number.

It is not a de Polignac number, because 83178313 - 2¹⁷ = 83047241 is a prime.

It is not a weakly prime, because it can be changed into another prime (83178323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41589156 + 41589157.

It is an arithmetic number, because the mean of its divisors is an integer number (41589157).

Almost surely, 2^83178313 is an apocalyptic number.

It is an amenable number.

83178313 is a deficient number, since it is larger than the sum of its proper divisors (1).

83178313 is an equidigital number, since it uses as much as digits as its factorization.

83178313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 34.

The square root of 83178313 is about 9120.2145259857. The cubic root of 83178313 is about 436.5192187785.

The spelling of 83178313 in words is "eighty-three million, one hundred seventy-eight thousand, three hundred thirteen".