304401521145 has 32 divisors (see below), whose sum is σ = 501805632384. Its totient is φ = 157472192000.

The previous prime is 304401521141. The next prime is 304401521153. The reversal of 304401521145 is 541125104403.

It is not a de Polignac number, because 304401521145 - 2² = 304401521141 is a prime.

It is a super-2 number, since 2×304401521145² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (304401521141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1324131 + ... + 1536920.

It is an arithmetic number, because the mean of its divisors is an integer number (15681426012).

Almost surely, 2^304401521145 is an apocalyptic number.

It is an amenable number.

304401521145 is a deficient number, since it is larger than the sum of its proper divisors (197404111239).

304401521145 is a wasteful number, since it uses less digits than its factorization.

304401521145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2861273.

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 304401521145 its reverse (541125104403), we get a palindrome (845526625548).

The spelling of 304401521145 in words is "three hundred four billion, four hundred one million, five hundred twenty-one thousand, one hundred forty-five".