109231380 has 162 divisors, whose sum is σ = 358428798. Its totient is φ = 26922240.

The previous prime is 109231379. The next prime is 109231387. The reversal of 109231380 is 83132901.

It can be written as a sum of positive squares in 3 ways, for example, as 6290064 + 102941316 = 2508^2 + 10146^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109231387) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 2664160 + ... + 2664200.

Almost surely, 2^109231380 is an apocalyptic number.

109231380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 109231380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179214399).

109231380 is an abundant number, since it is smaller than the sum of its proper divisors (249197418).

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

109231380 is a wasteful number, since it uses less digits than its factorization.

109231380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135 (or 70 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 109231380 is about 10451.3817268340. The cubic root of 109231380 is about 478.0233819669.

The spelling of 109231380 in words is "one hundred nine million, two hundred thirty-one thousand, three hundred eighty".