10205445131 has 4 divisors (see below), whose sum is σ = 11663365872. Its totient is φ = 8747524392.

The previous prime is 10205445127. The next prime is 10205445139. The reversal of 10205445131 is 13154450201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13154450201 = 1511 ⋅8705791.

It is a cyclic number.

It is not a de Polignac number, because 10205445131 - 2² = 10205445127 is a prime.

It is a super-2 number, since 2×10205445131² (a number of 21 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 10205445131.

It is not an unprimeable number, because it can be changed into a prime (10205445139) 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, 728960360 + ... + 728960373.

It is an arithmetic number, because the mean of its divisors is an integer number (2915841468).

Almost surely, 2^10205445131 is an apocalyptic number.

10205445131 is a deficient number, since it is larger than the sum of its proper divisors (1457920741).

10205445131 is an equidigital number, since it uses as much as digits as its factorization.

10205445131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1457920740.

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 10205445131 its reverse (13154450201), we get a palindrome (23359895332).

The spelling of 10205445131 in words is "ten billion, two hundred five million, four hundred forty-five thousand, one hundred thirty-one".