276208013 has 2 divisors, whose sum is σ = 276208014. Its totient is φ = 276208012.

The previous prime is 276208003. The next prime is 276208019. The reversal of 276208013 is 310802672.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142157929 + 134050084 = 11923^2 + 11578^2 .

It is a cyclic number.

It is not a de Polignac number, because 276208013 - 2²⁴ = 259430797 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (276208019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 138104006 + 138104007.

It is an arithmetic number, because the mean of its divisors is an integer number (138104007).

Almost surely, 2^276208013 is an apocalyptic number.

It is an amenable number.

276208013 is a deficient number, since it is larger than the sum of its proper divisors (1).

276208013 is an equidigital number, since it uses as much as digits as its factorization.

276208013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 276208013 is about 16619.5070023151. The cubic root of 276208013 is about 651.2465333841.

The spelling of 276208013 in words is "two hundred seventy-six million, two hundred eight thousand, thirteen".