3172857146 has 4 divisors (see below), whose sum is σ = 4759285722. Its totient is φ = 1586428572.

The previous prime is 3172857133. The next prime is 3172857151. The reversal of 3172857146 is 6417582713.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1807185121 + 1365672025 = 42511^2 + 36955^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3172857097 and 3172857106.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 793214285 + ... + 793214288.

Almost surely, 2^3172857146 is an apocalyptic number.

3172857146 is a deficient number, since it is larger than the sum of its proper divisors (1586428576).

3172857146 is a wasteful number, since it uses less digits than its factorization.

3172857146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1586428575.

The product of its digits is 282240, while the sum is 44.

The square root of 3172857146 is about 56328.1203840497. The cubic root of 3172857146 is about 1469.4342997373.

The spelling of 3172857146 in words is "three billion, one hundred seventy-two million, eight hundred fifty-seven thousand, one hundred forty-six".