981487343 has 2 divisors, whose sum is σ = 981487344. Its totient is φ = 981487342.

The previous prime is 981487319. The next prime is 981487357. The reversal of 981487343 is 343784189.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 981487343 - 2⁶ = 981487279 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (981487363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490743671 + 490743672.

It is an arithmetic number, because the mean of its divisors is an integer number (490743672).

Almost surely, 2^981487343 is an apocalyptic number.

981487343 is a deficient number, since it is larger than the sum of its proper divisors (1).

981487343 is an equidigital number, since it uses as much as digits as its factorization.

981487343 is an evil number, because the sum of its binary digits is even.

The product of its digits is 580608, while the sum is 47.

The square root of 981487343 is about 31328.6983930070. The cubic root of 981487343 is about 993.7906379595.

The spelling of 981487343 in words is "nine hundred eighty-one million, four hundred eighty-seven thousand, three hundred forty-three".