404531505313 has 4 divisors (see below), whose sum is σ = 435649313428. Its totient is φ = 373413697200.

The previous prime is 404531505311. The next prime is 404531505347. The reversal of 404531505313 is 313505135404.

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 172908767329 + 231622737984 = 415823^2 + 481272^2 .

It is a cyclic number.

It is not a de Polignac number, because 404531505313 - 2¹ = 404531505311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (404531505311) 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, 15558904038 + ... + 15558904063.

It is an arithmetic number, because the mean of its divisors is an integer number (108912328357).

Almost surely, 2^404531505313 is an apocalyptic number.

It is an amenable number.

404531505313 is a deficient number, since it is larger than the sum of its proper divisors (31117808115).

404531505313 is a wasteful number, since it uses less digits than its factorization.

404531505313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31117808114.

The product of its (nonzero) digits is 54000, while the sum is 34.

The spelling of 404531505313 in words is "four hundred four billion, five hundred thirty-one million, five hundred five thousand, three hundred thirteen".