234401320303021 has 4 divisors (see below), whose sum is σ = 234431398755612. Its totient is φ = 234371241850432.

The previous prime is 234401320303019. The next prime is 234401320303039. The reversal of 234401320303021 is 120303023104432.

It is a happy number.

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 201902359285225 + 32498961017796 = 14209235^2 + 5700786^2 .

It is a cyclic number.

It is not a de Polignac number, because 234401320303021 - 2¹ = 234401320303019 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 (234401320303091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15039214606 + ... + 15039230191.

It is an arithmetic number, because the mean of its divisors is an integer number (58607849688903).

Almost surely, 2^{234401320303021} is an apocalyptic number.

It is an amenable number.

234401320303021 is a deficient number, since it is larger than the sum of its proper divisors (30078452591).

234401320303021 is an equidigital number, since it uses as much as digits as its factorization.

234401320303021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30078452590.

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 234401320303021 its reverse (120303023104432), we get a palindrome (354704343407453).

The spelling of 234401320303021 in words is "two hundred thirty-four trillion, four hundred one billion, three hundred twenty million, three hundred three thousand, twenty-one".