34320040021 has 8 divisors (see below), whose sum is σ = 34404074424. Its totient is φ = 34236108480.

The previous prime is 34320040009. The next prime is 34320040031. The reversal of 34320040021 is 12004002343.

It can be written as a sum of positive squares in 4 ways, for example, as 6050661796 + 28269378225 = 77786^2 + 168135^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 34320040021 - 2⁷ = 34320039893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34320040031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 664875 + ... + 714631.

It is an arithmetic number, because the mean of its divisors is an integer number (4300509303).

Almost surely, 2^34320040021 is an apocalyptic number.

It is an amenable number.

34320040021 is a deficient number, since it is larger than the sum of its proper divisors (84034403).

34320040021 is an equidigital number, since it uses as much as digits as its factorization.

34320040021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51431.

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 34320040021 its reverse (12004002343), we get a palindrome (46324042364).

The spelling of 34320040021 in words is "thirty-four billion, three hundred twenty million, forty thousand, twenty-one".