3100212 has 18 divisors (see below), whose sum is σ = 7836738. Its totient is φ = 1033392.

The previous prime is 3100199. The next prime is 3100219. The reversal of 3100212 is 2120013.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1572516 + 1527696 = 1254^2 + 1236^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×3100212² = 19222628889888, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 3100194 and 3100203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3100219) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 43023 + ... + 43094.

Almost surely, 2^3100212 is an apocalyptic number.

It is an amenable number.

3100212 is an abundant number, since it is smaller than the sum of its proper divisors (4736526).

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

3100212 is a wasteful number, since it uses less digits than its factorization.

3100212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86127 (or 86122 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 3100212 is about 1760.7418890911. The cubic root of 3100212 is about 145.8132973472.

Adding to 3100212 its reverse (2120013), we get a palindrome (5220225).

The spelling of 3100212 in words is "three million, one hundred thousand, two hundred twelve".