3121072 has 20 divisors (see below), whose sum is σ = 6112456. Its totient is φ = 1543680.

The previous prime is 3121057. The next prime is 3121087. The reversal of 3121072 is 2701213.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3121057) and next prime (3121087).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 547 + ... + 2557.

Almost surely, 2^3121072 is an apocalyptic number.

It is an amenable number.

3121072 is a deficient number, since it is larger than the sum of its proper divisors (2991384).

3121072 is a wasteful number, since it uses less digits than its factorization.

3121072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2116 (or 2110 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 3121072 is about 1766.6555974496. The cubic root of 3121072 is about 146.1396050049.

Adding to 3121072 its reverse (2701213), we get a palindrome (5822285).

The spelling of 3121072 in words is "three million, one hundred twenty-one thousand, seventy-two".