3431421 has 36 divisors (see below), whose sum is σ = 5975424. Its totient is φ = 1890000.

The previous prime is 3431411. The next prime is 3431431. The reversal of 3431421 is 1241343.

It is an interprime number because it is at equal distance from previous prime (3431411) and next prime (3431431).

It is not a de Polignac number, because 3431421 - 2¹¹ = 3429373 is a prime.

It is a nialpdrome in base 7.

It is a junction number, because it is equal to n+sod(n) for n = 3431394 and 3431403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3431401) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 13546 + ... + 13796.

It is an arithmetic number, because the mean of its divisors is an integer number (165984).

Almost surely, 2^3431421 is an apocalyptic number.

3431421 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

3431421 is a deficient number, since it is larger than the sum of its proper divisors (2544003).

3431421 is a wasteful number, since it uses less digits than its factorization.

3431421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302 (or 292 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 3431421 is about 1852.4095119600. The cubic root of 3431421 is about 150.8312516289.

Adding to 3431421 its reverse (1241343), we get a palindrome (4672764).

It can be divided in two parts, 343 and 1421, that added together give a square (1764 = 42²).

The spelling of 3431421 in words is "three million, four hundred thirty-one thousand, four hundred twenty-one".