505201304431 has 4 divisors (see below), whose sum is σ = 506700418432. Its totient is φ = 503702190432.

The previous prime is 505201304411. The next prime is 505201304471. The reversal of 505201304431 is 134403102505.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 505201304431 - 2¹¹ = 505201302383 is a prime.

It is a super-2 number, since 2×505201304431² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 505201304431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505201304411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 749556495 + ... + 749557168.

It is an arithmetic number, because the mean of its divisors is an integer number (126675104608).

Almost surely, 2^505201304431 is an apocalyptic number.

505201304431 is a deficient number, since it is larger than the sum of its proper divisors (1499114001).

505201304431 is a wasteful number, since it uses less digits than its factorization.

505201304431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1499114000.

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 505201304431 its reverse (134403102505), we get a palindrome (639604406936).

The spelling of 505201304431 in words is "five hundred five billion, two hundred one million, three hundred four thousand, four hundred thirty-one".