981734731 has 16 divisors (see below), whose sum is σ = 1059125760. Its totient is φ = 907057440.

The previous prime is 981734723. The next prime is 981734749. The reversal of 981734731 is 137437189.

It is a cyclic number.

It is not a de Polignac number, because 981734731 - 2³ = 981734723 is a prime.

It is a super-2 number, since 2×981734731² = 1927606164103284722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (981734771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 272361 + ... + 275941.

It is an arithmetic number, because the mean of its divisors is an integer number (66195360).

Almost surely, 2^981734731 is an apocalyptic number.

981734731 is a deficient number, since it is larger than the sum of its proper divisors (77391029).

981734731 is a wasteful number, since it uses less digits than its factorization.

981734731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3954.

The product of its digits is 127008, while the sum is 43.

The square root of 981734731 is about 31332.6464091369. The cubic root of 981734731 is about 993.8741273109.

The spelling of 981734731 in words is "nine hundred eighty-one million, seven hundred thirty-four thousand, seven hundred thirty-one".