1304000205531 has 8 divisors (see below), whose sum is σ = 1840941466704. Its totient is φ = 818196207360.

The previous prime is 1304000205527. The next prime is 1304000205533. The reversal of 1304000205531 is 1355020004031.

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

It is not a de Polignac number, because 1304000205531 - 2² = 1304000205527 is a prime.

It is a super-2 number, since 2×1304000205531² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1304000205533) 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, 12784315690 + ... + 12784315791.

It is an arithmetic number, because the mean of its divisors is an integer number (230117683338).

Almost surely, 2^{1304000205531} is an apocalyptic number.

1304000205531 is a deficient number, since it is larger than the sum of its proper divisors (536941261173).

1304000205531 is a wasteful number, since it uses less digits than its factorization.

1304000205531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25568631501.

The product of its (nonzero) digits is 1800, while the sum is 24.

Adding to 1304000205531 its reverse (1355020004031), we get a palindrome (2659020209562).

The spelling of 1304000205531 in words is "one trillion, three hundred four billion, two hundred five thousand, five hundred thirty-one".