10505320431 has 4 divisors (see below), whose sum is σ = 14007093912. Its totient is φ = 7003546952.

The previous prime is 10505320417. The next prime is 10505320453. The reversal of 10505320431 is 13402350501.

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 10505320431 - 2¹⁸ = 10505058287 is a prime.

It is a super-2 number, since 2×10505320431² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10505720431) 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, 1750886736 + ... + 1750886741.

It is an arithmetic number, because the mean of its divisors is an integer number (3501773478).

Almost surely, 2^10505320431 is an apocalyptic number.

10505320431 is a deficient number, since it is larger than the sum of its proper divisors (3501773481).

10505320431 is an equidigital number, since it uses as much as digits as its factorization.

10505320431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3501773480.

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

Adding to 10505320431 its reverse (13402350501), we get a palindrome (23907670932).

The spelling of 10505320431 in words is "ten billion, five hundred five million, three hundred twenty thousand, four hundred thirty-one".