3101421 has 4 divisors (see below), whose sum is σ = 4135232. Its totient is φ = 2067612.

The previous prime is 3101419. The next prime is 3101437. The reversal of 3101421 is 1241013.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 3101421 - 2¹ = 3101419 is a prime.

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3101397 and 3101406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3101471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 516901 + ... + 516906.

It is an arithmetic number, because the mean of its divisors is an integer number (1033808).

Almost surely, 2^3101421 is an apocalyptic number.

It is an amenable number.

3101421 is a deficient number, since it is larger than the sum of its proper divisors (1033811).

3101421 is a wasteful number, since it uses less digits than its factorization.

3101421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1033810.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 3101421 is about 1761.0851768157. The cubic root of 3101421 is about 145.8322493162.

Adding to 3101421 its reverse (1241013), we get a palindrome (4342434).

The spelling of 3101421 in words is "three million, one hundred one thousand, four hundred twenty-one".