3509731 has 4 divisors (see below), whose sum is σ = 3662352. Its totient is φ = 3357112.

The previous prime is 3509729. The next prime is 3509741. The reversal of 3509731 is 1379053.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3509731 - 2¹ = 3509729 is a prime.

It is a super-2 number, since 2×3509731² = 24636423384722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3509731.

It is not an unprimeable number, because it can be changed into a prime (3509711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76276 + ... + 76321.

It is an arithmetic number, because the mean of its divisors is an integer number (915588).

Almost surely, 2^3509731 is an apocalyptic number.

3509731 is a deficient number, since it is larger than the sum of its proper divisors (152621).

3509731 is a wasteful number, since it uses less digits than its factorization.

3509731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152620.

The product of its (nonzero) digits is 2835, while the sum is 28.

The square root of 3509731 is about 1873.4276073550. The cubic root of 3509731 is about 151.9700281394.

The spelling of 3509731 in words is "three million, five hundred nine thousand, seven hundred thirty-one".