10400131205 has 4 divisors (see below), whose sum is σ = 12480157452. Its totient is φ = 8320104960.

The previous prime is 10400131187. The next prime is 10400131211. The reversal of 10400131205 is 50213100401.

10400131205 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50213100401 = 141073 ⋅355937.

It can be written as a sum of positive squares in 2 ways, for example, as 4109579236 + 6290551969 = 64106^2 + 79313^2 .

It is not a de Polignac number, because 10400131205 - 2²⁴ = 10383353989 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1040013116 + ... + 1040013125.

It is an arithmetic number, because the mean of its divisors is an integer number (3120039363).

Almost surely, 2^10400131205 is an apocalyptic number.

It is an amenable number.

10400131205 is a deficient number, since it is larger than the sum of its proper divisors (2080026247).

10400131205 is an equidigital number, since it uses as much as digits as its factorization.

10400131205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2080026246.

The product of its (nonzero) digits is 120, while the sum is 17.

Adding to 10400131205 its reverse (50213100401), we get a palindrome (60613231606).

The spelling of 10400131205 in words is "ten billion, four hundred million, one hundred thirty-one thousand, two hundred five".