103205105131 has 16 divisors (see below), whose sum is σ = 104486706688. Its totient is φ = 101933445600.

The previous prime is 103205105117. The next prime is 103205105137. The reversal of 103205105131 is 131501502301.

It is a cyclic number.

It is not a de Polignac number, because 103205105131 - 2¹¹ = 103205103083 is a prime.

It is a super-2 number, since 2×103205105131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103205105137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19971310 + ... + 19976476.

It is an arithmetic number, because the mean of its divisors is an integer number (6530419168).

Almost surely, 2^103205105131 is an apocalyptic number.

103205105131 is a deficient number, since it is larger than the sum of its proper divisors (1281601557).

103205105131 is a wasteful number, since it uses less digits than its factorization.

103205105131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6082.

The product of its (nonzero) digits is 450, while the sum is 22.

Adding to 103205105131 its reverse (131501502301), we get a palindrome (234706607432).

The spelling of 103205105131 in words is "one hundred three billion, two hundred five million, one hundred five thousand, one hundred thirty-one".