3240731 has 4 divisors (see below), whose sum is σ = 3490032. Its totient is φ = 2991432.

The previous prime is 3240707. The next prime is 3240733. The reversal of 3240731 is 1370423.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1370423 = 593 ⋅2311.

It is a cyclic number.

It is not a de Polignac number, because 3240731 - 2⁶ = 3240667 is a prime.

It is a super-2 number, since 2×3240731² = 21004674828722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3240733) 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, 124631 + ... + 124656.

It is an arithmetic number, because the mean of its divisors is an integer number (872508).

Almost surely, 2^3240731 is an apocalyptic number.

3240731 is a deficient number, since it is larger than the sum of its proper divisors (249301).

3240731 is a wasteful number, since it uses less digits than its factorization.

3240731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249300.

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 3240731 is about 1800.2030441036. The cubic root of 3240731 is about 147.9838520244.

The spelling of 3240731 in words is "three million, two hundred forty thousand, seven hundred thirty-one".