3171960 has 160 divisors (see below), whose sum is σ = 11761200. Its totient is φ = 760320.

The previous prime is 3171947. The next prime is 3171967. The reversal of 3171960 is 691713.

It is a Cunningham number, because it is equal to 1781²-1.

It is a super-2 number, since 2×3171960² = 20122660483200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3171967) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 35596 + ... + 35684.

Almost surely, 2^3171960 is an apocalyptic number.

3171960 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3171960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5880600).

3171960 is an abundant number, since it is smaller than the sum of its proper divisors (8589240).

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

3171960 is a wasteful number, since it uses less digits than its factorization.

3171960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123 (or 110 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 27.

The square root of 3171960 is about 1780.9997192588. Note that the first 3 decimals coincide. The cubic root of 3171960 is about 146.9295789312.

The spelling of 3171960 in words is "three million, one hundred seventy-one thousand, nine hundred sixty".