350832320721 has 27 divisors (see below), whose sum is σ = 510067097449. Its totient is φ = 232370713032.

The previous prime is 350832320719. The next prime is 350832320731. The reversal of 350832320721 is 127023238053.

The square root of 350832320721 is 592311.

It is a perfect power (a square), and thus also a powerful number.

350832320721 is a `hidden beast` number, since 350 + 8 + 3 + 232 + 0 + 72 + 1 = 666.

It is not a de Polignac number, because 350832320721 - 2¹ = 350832320719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (350832320701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 318070456 + ... + 318071558.

Almost surely, 2^350832320721 is an apocalyptic number.

350832320721 is the 592311-st square number.

350832320721 is the 296156-th centered octagonal number.

It is an amenable number.

350832320721 is a deficient number, since it is larger than the sum of its proper divisors (159234776728).

350832320721 is an frugal number, since it uses more digits than its factorization.

With its predecessor (350832320720) it forms a Ruth-Aaron pair, since the sum of their prime factors is the same (2570).

350832320721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2570 (or 1285 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

Multiplying 350832320721 by its sum of digits (36), we get a square (12629963545956 = 3553866²).

Adding to 350832320721 its reverse (127023238053), we get a palindrome (477855558774).

The spelling of 350832320721 in words is "three hundred fifty billion, eight hundred thirty-two million, three hundred twenty thousand, seven hundred twenty-one".