106103781281 has 4 divisors (see below), whose sum is σ = 107446867200. Its totient is φ = 104760695364.

The previous prime is 106103781257. The next prime is 106103781319. The reversal of 106103781281 is 182187301601.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 182187301601 = 20323 ⋅8964587.

It is a cyclic number.

It is not a de Polignac number, because 106103781281 - 2²² = 106099586977 is a prime.

It is a super-2 number, since 2×106103781281² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (106103781221) 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, 671542841 + ... + 671542998.

It is an arithmetic number, because the mean of its divisors is an integer number (26861716800).

Almost surely, 2^106103781281 is an apocalyptic number.

It is an amenable number.

106103781281 is a deficient number, since it is larger than the sum of its proper divisors (1343085919).

106103781281 is an equidigital number, since it uses as much as digits as its factorization.

106103781281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1343085918.

The product of its (nonzero) digits is 16128, while the sum is 38.

The spelling of 106103781281 in words is "one hundred six billion, one hundred three million, seven hundred eighty-one thousand, two hundred eighty-one".