356222813 has 2 divisors, whose sum is σ = 356222814. Its totient is φ = 356222812.

The previous prime is 356222761. The next prime is 356222837. The reversal of 356222813 is 318222653.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 354870244 + 1352569 = 18838^2 + 1163^2 .

It is a cyclic number.

It is not a de Polignac number, because 356222813 - 2⁸ = 356222557 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 356222813.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (356222213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 178111406 + 178111407.

It is an arithmetic number, because the mean of its divisors is an integer number (178111407).

Almost surely, 2^356222813 is an apocalyptic number.

It is an amenable number.

356222813 is a deficient number, since it is larger than the sum of its proper divisors (1).

356222813 is an equidigital number, since it uses as much as digits as its factorization.

356222813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 32.

The square root of 356222813 is about 18873.8658732121. The cubic root of 356222813 is about 708.8819359615.

The spelling of 356222813 in words is "three hundred fifty-six million, two hundred twenty-two thousand, eight hundred thirteen".