4312981 has 8 divisors (see below), whose sum is σ = 4626720. Its totient is φ = 4007952.

The previous prime is 4312969. The next prime is 4313027. The reversal of 4312981 is 1892134.

It is a happy number.

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 4312981 - 2⁷ = 4312853 is a prime.

It is a super-2 number, since 2×4312981² = 37203610212722, which contains 22 as substring.

It is a Duffinian number.

4312981 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4312961) 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, 1135 + ... + 3148.

It is an arithmetic number, because the mean of its divisors is an integer number (578340).

Almost surely, 2^4312981 is an apocalyptic number.

It is an amenable number.

4312981 is a deficient number, since it is larger than the sum of its proper divisors (313739).

4312981 is a wasteful number, since it uses less digits than its factorization.

4312981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4355.

The product of its digits is 1728, while the sum is 28.

The square root of 4312981 is about 2076.7717736911. The cubic root of 4312981 is about 162.7768031753.

The spelling of 4312981 in words is "four million, three hundred twelve thousand, nine hundred eighty-one".