350823721 has 2 divisors, whose sum is σ = 350823722. Its totient is φ = 350823720.

The previous prime is 350823719. The next prime is 350823727. The reversal of 350823721 is 127328053.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 332880025 + 17943696 = 18245^2 + 4236^2 .

It is a cyclic number.

It is not a de Polignac number, because 350823721 - 2¹ = 350823719 is a prime.

Together with 350823719, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (350823727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 175411860 + 175411861.

It is an arithmetic number, because the mean of its divisors is an integer number (175411861).

Almost surely, 2^350823721 is an apocalyptic number.

It is an amenable number.

350823721 is a deficient number, since it is larger than the sum of its proper divisors (1).

350823721 is an equidigital number, since it uses as much as digits as its factorization.

350823721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 350823721 is about 18730.2888658985. The cubic root of 350823721 is about 705.2822979586.

The spelling of 350823721 in words is "three hundred fifty million, eight hundred twenty-three thousand, seven hundred twenty-one".