830121361 has 4 divisors (see below), whose sum is σ = 830379492. Its totient is φ = 829863232.

The previous prime is 830121319. The next prime is 830121377. The reversal of 830121361 is 163121038.

830121361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 330330625 + 499790736 = 18175^2 + 22356^2 .

It is a cyclic number.

It is not a de Polignac number, because 830121361 - 2¹⁹ = 829597073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (830121311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124180 + ... + 130693.

It is an arithmetic number, because the mean of its divisors is an integer number (207594873).

Almost surely, 2^830121361 is an apocalyptic number.

It is an amenable number.

830121361 is a deficient number, since it is larger than the sum of its proper divisors (258131).

830121361 is a wasteful number, since it uses less digits than its factorization.

830121361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258130.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 830121361 is about 28811.8267556918. The cubic root of 830121361 is about 939.8254395187.

Adding to 830121361 its reverse (163121038), we get a palindrome (993242399).

The spelling of 830121361 in words is "eight hundred thirty million, one hundred twenty-one thousand, three hundred sixty-one".