981936343 has 4 divisors (see below), whose sum is σ = 983440728. Its totient is φ = 980431960.

The previous prime is 981936331. The next prime is 981936367. The reversal of 981936343 is 343639189.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 981936343 - 2¹⁷ = 981805271 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 981936293 and 981936302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981936313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 751213 + ... + 752518.

It is an arithmetic number, because the mean of its divisors is an integer number (245860182).

Almost surely, 2^981936343 is an apocalyptic number.

981936343 is a deficient number, since it is larger than the sum of its proper divisors (1504385).

981936343 is a wasteful number, since it uses less digits than its factorization.

981936343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1504384.

The product of its digits is 419904, while the sum is 46.

The square root of 981936343 is about 31335.8635272749. The cubic root of 981936343 is about 993.9421576485.

The spelling of 981936343 in words is "nine hundred eighty-one million, nine hundred thirty-six thousand, three hundred forty-three".