3149634217 has 4 divisors (see below), whose sum is σ = 3334906836. Its totient is φ = 2964361600.

The previous prime is 3149634209. The next prime is 3149634223. The reversal of 3149634217 is 7124369413.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7124369413 = 7 ⋅1017767059.

It can be written as a sum of positive squares in 2 ways, for example, as 2823434496 + 326199721 = 53136^2 + 18061^2 .

It is a cyclic number.

It is not a de Polignac number, because 3149634217 - 2³ = 3149634209 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 3149634217.

It is not an unprimeable number, because it can be changed into a prime (3149634277) 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, 92636284 + ... + 92636317.

It is an arithmetic number, because the mean of its divisors is an integer number (833726709).

Almost surely, 2^3149634217 is an apocalyptic number.

It is an amenable number.

3149634217 is a deficient number, since it is larger than the sum of its proper divisors (185272619).

3149634217 is a wasteful number, since it uses less digits than its factorization.

3149634217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185272618.

The product of its digits is 108864, while the sum is 40.

The square root of 3149634217 is about 56121.6020530419. The cubic root of 3149634217 is about 1465.8404659116.

The spelling of 3149634217 in words is "three billion, one hundred forty-nine million, six hundred thirty-four thousand, two hundred seventeen".