3143997 has 12 divisors (see below), whose sum is σ = 4808700. Its totient is φ = 1972608.

The previous prime is 3143993. The next prime is 3144007. The reversal of 3143997 is 7993413.

It can be written as a sum of positive squares in 2 ways, for example, as 2842596 + 301401 = 1686^2 + 549^2 .

It is not a de Polignac number, because 3143997 - 2² = 3143993 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3143993) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10122 + ... + 10427.

It is an arithmetic number, because the mean of its divisors is an integer number (400725).

Almost surely, 2^3143997 is an apocalyptic number.

It is an amenable number.

3143997 is a deficient number, since it is larger than the sum of its proper divisors (1664703).

3143997 is a wasteful number, since it uses less digits than its factorization.

3143997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20572 (or 20569 counting only the distinct ones).

The product of its digits is 20412, while the sum is 36.

The square root of 3143997 is about 1773.1319747836. The cubic root of 3143997 is about 146.4965422971.

The spelling of 3143997 in words is "three million, one hundred forty-three thousand, nine hundred ninety-seven".