2731145 has 8 divisors (see below), whose sum is σ = 3353856. Its totient is φ = 2133936.

The previous prime is 2731129. The next prime is 2731147. The reversal of 2731145 is 5411372.

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

It is a cyclic number.

It is not a de Polignac number, because 2731145 - 2⁴ = 2731129 is a prime.

It is a super-2 number, since 2×2731145² = 14918306022050, 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 2731145.

It is not an unprimeable number, because it can be changed into a prime (2731147) 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, 6137 + ... + 6566.

It is an arithmetic number, because the mean of its divisors is an integer number (419232).

2^2731145 is an apocalyptic number.

It is an amenable number.

2731145 is a deficient number, since it is larger than the sum of its proper divisors (622711).

2731145 is a wasteful number, since it uses less digits than its factorization.

2731145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12751.

The product of its digits is 840, while the sum is 23.

The square root of 2731145 is about 1652.6176206249. The cubic root of 2731145 is about 139.7810352613.

The spelling of 2731145 in words is "two million, seven hundred thirty-one thousand, one hundred forty-five".