350721223 has 2 divisors, whose sum is σ = 350721224. Its totient is φ = 350721222.

The previous prime is 350721199. The next prime is 350721253. The reversal of 350721223 is 322127053.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-350721223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (350721253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 175360611 + 175360612.

It is an arithmetic number, because the mean of its divisors is an integer number (175360612).

Almost surely, 2^350721223 is an apocalyptic number.

350721223 is a deficient number, since it is larger than the sum of its proper divisors (1).

350721223 is an equidigital number, since it uses as much as digits as its factorization.

350721223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 350721223 is about 18727.5525096047. The cubic root of 350721223 is about 705.2136052772.

Adding to 350721223 its reverse (322127053), we get a palindrome (672848276).

The spelling of 350721223 in words is "three hundred fifty million, seven hundred twenty-one thousand, two hundred twenty-three".