2307981 has 32 divisors (see below), whose sum is σ = 3612672. Its totient is φ = 1298880.

The previous prime is 2307979. The next prime is 2307983. The reversal of 2307981 is 1897032.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2307979) and next prime (2307983).

It is not a de Polignac number, because 2307981 - 2¹ = 2307979 is a prime.

It is a super-2 number, since 2×2307981² = 10653552592722, which contains 22 as substring.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2307983) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27766 + ... + 27848.

It is an arithmetic number, because the mean of its divisors is an integer number (112896).

2^2307981 is an apocalyptic number.

It is an amenable number.

2307981 is a deficient number, since it is larger than the sum of its proper divisors (1304691).

2307981 is a wasteful number, since it uses less digits than its factorization.

2307981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 2307981 is about 1519.2040679250. The cubic root of 2307981 is about 132.1531166267.

The spelling of 2307981 in words is "two million, three hundred seven thousand, nine hundred eighty-one".