4311421 has 4 divisors (see below), whose sum is σ = 4565052. Its totient is φ = 4057792.

The previous prime is 4311413. The next prime is 4311467. The reversal of 4311421 is 1241134.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1241134 = 2 ⋅620567.

It can be written as a sum of positive squares in 2 ways, for example, as 1716100 + 2595321 = 1310^2 + 1611^2 .

It is a cyclic number.

It is not a de Polignac number, because 4311421 - 2³ = 4311413 is a prime.

It is a Duffinian number.

4311421 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 4311395 and 4311404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4311121) 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, 126790 + ... + 126823.

It is an arithmetic number, because the mean of its divisors is an integer number (1141263).

Almost surely, 2^4311421 is an apocalyptic number.

It is an amenable number.

4311421 is a deficient number, since it is larger than the sum of its proper divisors (253631).

4311421 is a wasteful number, since it uses less digits than its factorization.

4311421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253630.

The product of its digits is 96, while the sum is 16.

The square root of 4311421 is about 2076.3961568063. The cubic root of 4311421 is about 162.7571754178.

Adding to 4311421 its reverse (1241134), we get a palindrome (5552555).

The spelling of 4311421 in words is "four million, three hundred eleven thousand, four hundred twenty-one".