304122031520413 has 4 divisors (see below), whose sum is σ = 309860183058588. Its totient is φ = 298383879982240.

The previous prime is 304122031520407. The next prime is 304122031520423. The reversal of 304122031520413 is 314025130221403.

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 236197615913284 + 67924415607129 = 15368722^2 + 8241627^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-304122031520413 is a prime.

It is a super-2 number, since 2×304122031520413² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304122031520423) 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, 2869075769008 + ... + 2869075769113.

It is an arithmetic number, because the mean of its divisors is an integer number (77465045764647).

Almost surely, 2^{304122031520413} is an apocalyptic number.

It is an amenable number.

304122031520413 is a deficient number, since it is larger than the sum of its proper divisors (5738151538175).

304122031520413 is an equidigital number, since it uses as much as digits as its factorization.

304122031520413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5738151538174.

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 304122031520413 its reverse (314025130221403), we get a palindrome (618147161741816).

The spelling of 304122031520413 in words is "three hundred four trillion, one hundred twenty-two billion, thirty-one million, five hundred twenty thousand, four hundred thirteen".