3197421 has 8 divisors (see below), whose sum is σ = 4736960. Its totient is φ = 2131596.

The previous prime is 3197419. The next prime is 3197449. The reversal of 3197421 is 1247913.

It is not a de Polignac number, because 3197421 - 2¹ = 3197419 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 118423 = 3197421 / (3 + 1 + 9 + 7 + 4 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3197401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59185 + ... + 59238.

It is an arithmetic number, because the mean of its divisors is an integer number (592120).

Almost surely, 2^3197421 is an apocalyptic number.

It is an amenable number.

3197421 is a deficient number, since it is larger than the sum of its proper divisors (1539539).

3197421 is a wasteful number, since it uses less digits than its factorization.

3197421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118432 (or 118426 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 3197421 is about 1788.1333842865. The cubic root of 3197421 is about 147.3216613172.

The spelling of 3197421 in words is "three million, one hundred ninety-seven thousand, four hundred twenty-one".