84881731 has 8 divisors (see below), whose sum is σ = 98045424. Its totient is φ = 72625920.

The previous prime is 84881729. The next prime is 84881747. The reversal of 84881731 is 13718848.

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 84881731 - 2¹ = 84881729 is a prime.

It is a super-2 number, since 2×84881731² = 14409816515112722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84881701) 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, 226770 + ... + 227143.

It is an arithmetic number, because the mean of its divisors is an integer number (12255678).

Almost surely, 2^84881731 is an apocalyptic number.

84881731 is a deficient number, since it is larger than the sum of its proper divisors (13163693).

84881731 is a wasteful number, since it uses less digits than its factorization.

84881731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453941.

The product of its digits is 43008, while the sum is 40.

The square root of 84881731 is about 9213.1281875376. The cubic root of 84881731 is about 439.4789476020.

It can be divided in two parts, 848817 and 31, that added together give a palindrome (848848).

The spelling of 84881731 in words is "eighty-four million, eight hundred eighty-one thousand, seven hundred thirty-one".