72283313 has 2 divisors, whose sum is σ = 72283314. Its totient is φ = 72283312.

The previous prime is 72283261. The next prime is 72283331. The reversal of 72283313 is 31338227.

Together with next prime (72283331) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72046144 + 237169 = 8488^2 + 487^2 .

It is a cyclic number.

It is not a de Polignac number, because 72283313 - 2²⁴ = 55506097 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is equal to p_4244465 and since 72283313 and 4244465 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (72283363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36141656 + 36141657.

It is an arithmetic number, because the mean of its divisors is an integer number (36141657).

Almost surely, 2^72283313 is an apocalyptic number.

It is an amenable number.

72283313 is a deficient number, since it is larger than the sum of its proper divisors (1).

72283313 is an equidigital number, since it uses as much as digits as its factorization.

72283313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 29.

The square root of 72283313 is about 8501.9593624058. The cubic root of 72283313 is about 416.5617123030.

The spelling of 72283313 in words is "seventy-two million, two hundred eighty-three thousand, three hundred thirteen".