3149731 has 8 divisors (see below), whose sum is σ = 3439520. Its totient is φ = 2866752.

The previous prime is 3149683. The next prime is 3149747. The reversal of 3149731 is 1379413.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3149731 is a prime.

It is a super-2 number, since 2×3149731² = 19841610744722, which contains 22 as substring.

It is an Ulam number.

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 3149731.

It is not an unprimeable number, because it can be changed into a prime (3149761) 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, 711 + ... + 2608.

It is an arithmetic number, because the mean of its divisors is an integer number (429940).

Almost surely, 2^3149731 is an apocalyptic number.

3149731 is the 949-th nonagonal number.

3149731 is a deficient number, since it is larger than the sum of its proper divisors (289789).

3149731 is a wasteful number, since it uses less digits than its factorization.

3149731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3405.

The product of its digits is 2268, while the sum is 28.

The square root of 3149731 is about 1774.7481511471. The cubic root of 3149731 is about 146.5855480034.

The spelling of 3149731 in words is "three million, one hundred forty-nine thousand, seven hundred thirty-one".