3931106 has 4 divisors (see below), whose sum is σ = 5896662. Its totient is φ = 1965552.

The previous prime is 3931093. The next prime is 3931159. The reversal of 3931106 is 6011393.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6011393 = 419 ⋅14347.

It can be written as a sum of positive squares in only one way, i.e., 2430481 + 1500625 = 1559^2 + 1225^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 982775 + ... + 982778.

Almost surely, 2^3931106 is an apocalyptic number.

3931106 is a deficient number, since it is larger than the sum of its proper divisors (1965556).

3931106 is a wasteful number, since it uses less digits than its factorization.

3931106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1965555.

The product of its (nonzero) digits is 486, while the sum is 23.

The square root of 3931106 is about 1982.7016921363. The cubic root of 3931106 is about 157.8234689170.

Adding to 3931106 its reverse (6011393), we get a palindrome (9942499).

The spelling of 3931106 in words is "three million, nine hundred thirty-one thousand, one hundred six".