10031213605 has 24 divisors (see below), whose sum is σ = 14194599192. Its totient is φ = 6784307712.

The previous prime is 10031213603. The next prime is 10031213623. The reversal of 10031213605 is 50631213001.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4152771364 + 5878442241 = 64442^2 + 76671^2 .

It is not a de Polignac number, because 10031213605 - 2¹ = 10031213603 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10031213603) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 262552 + ... + 298321.

It is an arithmetic number, because the mean of its divisors is an integer number (591441633).

Almost surely, 2^10031213605 is an apocalyptic number.

It is an amenable number.

10031213605 is a deficient number, since it is larger than the sum of its proper divisors (4163385587).

10031213605 is an equidigital number, since it uses as much as digits as its factorization.

10031213605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560965 (or 560958 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 22.

Adding to 10031213605 its reverse (50631213001), we get a palindrome (60662426606).

The spelling of 10031213605 in words is "ten billion, thirty-one million, two hundred thirteen thousand, six hundred five".