3211125 has 16 divisors (see below), whose sum is σ = 5343936. Its totient is φ = 1712400.

The previous prime is 3211123. The next prime is 3211127. The reversal of 3211125 is 5211123.

It is an interprime number because it is at equal distance from previous prime (3211123) and next prime (3211127).

It is not a de Polignac number, because 3211125 - 2¹ = 3211123 is a prime.

It is a super-2 number, since 2×3211125² = 20622647531250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an Ulam number.

3211125 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3211123) 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, 3907 + ... + 4656.

It is an arithmetic number, because the mean of its divisors is an integer number (333996).

Almost surely, 2^3211125 is an apocalyptic number.

It is an amenable number.

3211125 is a deficient number, since it is larger than the sum of its proper divisors (2132811).

3211125 is an equidigital number, since it uses as much as digits as its factorization.

3211125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8581 (or 8571 counting only the distinct ones).

The product of its digits is 60, while the sum is 15.

The square root of 3211125 is about 1791.9612160982. The cubic root of 3211125 is about 147.5318326393.

Adding to 3211125 its reverse (5211123), we get a palindrome (8422248).

It can be divided in two parts, 3 and 211125, that multiplied together give a triangular number (633375 = T₁₁₂₅).

The spelling of 3211125 in words is "three million, two hundred eleven thousand, one hundred twenty-five".