10643436313131 has 4 divisors (see below), whose sum is σ = 14191248417512. Its totient is φ = 7095624208752.

The previous prime is 10643436313067. The next prime is 10643436313157. The reversal of 10643436313131 is 13131363434601.

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

It is not a de Polignac number, because 10643436313131 - 2⁶ = 10643436313067 is a prime.

It is a super-2 number, since 2×10643436313131² (a number of 27 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 10643436313131.

It is not an unprimeable number, because it can be changed into a prime (10643436314131) 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, 1773906052186 + ... + 1773906052191.

It is an arithmetic number, because the mean of its divisors is an integer number (3547812104378).

Almost surely, 2^{10643436313131} is an apocalyptic number.

10643436313131 is a deficient number, since it is larger than the sum of its proper divisors (3547812104381).

10643436313131 is an equidigital number, since it uses as much as digits as its factorization.

10643436313131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3547812104380.

The product of its (nonzero) digits is 139968, while the sum is 39.

Adding to 10643436313131 its reverse (13131363434601), we get a palindrome (23774799747732).

The spelling of 10643436313131 in words is "ten trillion, six hundred forty-three billion, four hundred thirty-six million, three hundred thirteen thousand, one hundred thirty-one".