2720331 has 16 divisors (see below), whose sum is σ = 4108320. Its totient is φ = 1778400.

The previous prime is 2720329. The next prime is 2720359. The reversal of 2720331 is 1330272.

It is not a de Polignac number, because 2720331 - 2¹ = 2720329 is a prime.

It is a super-2 number, since 2×2720331² = 14800401499122, which contains 22 as substring.

2720331 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2720321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 481 + ... + 2381.

It is an arithmetic number, because the mean of its divisors is an integer number (256770).

2^2720331 is an apocalyptic number.

2720331 is a deficient number, since it is larger than the sum of its proper divisors (1387989).

2720331 is a wasteful number, since it uses less digits than its factorization.

2720331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1963 (or 1957 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 18.

The square root of 2720331 is about 1649.3425963092. The cubic root of 2720331 is about 139.5963030249.

The spelling of 2720331 in words is "two million, seven hundred twenty thousand, three hundred thirty-one".