681331134 has 64 divisors (see below), whose sum is σ = 1591902720. Its totient is φ = 192107520.

The previous prime is 681331121. The next prime is 681331141. The reversal of 681331134 is 431133186.

681331134 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×681331134² = 928424228315451912, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 96447 + ... + 103269.

It is an arithmetic number, because the mean of its divisors is an integer number (24873480).

Almost surely, 2^681331134 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 681331134, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (795951360).

681331134 is an abundant number, since it is smaller than the sum of its proper divisors (910571586).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

681331134 is a wasteful number, since it uses less digits than its factorization.

681331134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6945.

The product of its digits is 5184, while the sum is 30.

The square root of 681331134 is about 26102.3204715596. The cubic root of 681331134 is about 879.9393613519.

The spelling of 681331134 in words is "six hundred eighty-one million, three hundred thirty-one thousand, one hundred thirty-four".