981734723 has 2 divisors, whose sum is σ = 981734724. Its totient is φ = 981734722.

The previous prime is 981734657. The next prime is 981734749. The reversal of 981734723 is 327437189.

It is a strong prime.

It is an emirp because it is prime and its reverse (327437189) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 981734723 - 2¹⁸ = 981472579 is a prime.

It is not a weakly prime, because it can be changed into another prime (981734023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490867361 + 490867362.

It is an arithmetic number, because the mean of its divisors is an integer number (490867362).

Almost surely, 2^981734723 is an apocalyptic number.

981734723 is a deficient number, since it is larger than the sum of its proper divisors (1).

981734723 is an equidigital number, since it uses as much as digits as its factorization.

981734723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 44.

The square root of 981734723 is about 31332.6462814745. The cubic root of 981734723 is about 993.8741246113.

The spelling of 981734723 in words is "nine hundred eighty-one million, seven hundred thirty-four thousand, seven hundred twenty-three".