3171980 has 48 divisors (see below), whose sum is σ = 7714560. Its totient is φ = 1073088.

The previous prime is 3171977. The next prime is 3171989. The reversal of 3171980 is 891713.

3171980 = T₁₃₉ + T₁₄₀ + ... + T₂₇₈.

It is a super-2 number, since 2×3171980² = 20122914240800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3171989) 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, 19379 + ... + 19541.

It is an arithmetic number, because the mean of its divisors is an integer number (160720).

Almost surely, 2^3171980 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3171980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3857280).

3171980 is an abundant number, since it is smaller than the sum of its proper divisors (4542580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3171980 is a wasteful number, since it uses less digits than its factorization.

3171980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318 (or 316 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 29.

The square root of 3171980 is about 1781.0053340740. The cubic root of 3171980 is about 146.9298877398.

The spelling of 3171980 in words is "three million, one hundred seventy-one thousand, nine hundred eighty".