3243731 has 4 divisors (see below), whose sum is σ = 3273600. Its totient is φ = 3213864.

The previous prime is 3243727. The next prime is 3243733. The reversal of 3243731 is 1373423.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1373423 = 97 ⋅14159.

It is a cyclic number.

It is not a de Polignac number, because 3243731 - 2² = 3243727 is a prime.

It is a super-2 number, since 2×3243731² = 21043581600722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3243697 and 3243706.

It is not an unprimeable number, because it can be changed into a prime (3243733) 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, 14771 + ... + 14988.

It is an arithmetic number, because the mean of its divisors is an integer number (818400).

Almost surely, 2^3243731 is an apocalyptic number.

3243731 is a deficient number, since it is larger than the sum of its proper divisors (29869).

3243731 is a wasteful number, since it uses less digits than its factorization.

3243731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29868.

The product of its digits is 1512, while the sum is 23.

The square root of 3243731 is about 1801.0360906989. The cubic root of 3243731 is about 148.0295016670.

The spelling of 3243731 in words is "three million, two hundred forty-three thousand, seven hundred thirty-one".