109431210 has 192 divisors, whose sum is σ = 336856320. Its totient is φ = 22579200.

The previous prime is 109431151. The next prime is 109431211. The reversal of 109431210 is 12134901.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (109431211) 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 95 ways as a sum of consecutive naturals, for example, 724635 + ... + 724785.

It is an arithmetic number, because the mean of its divisors is an integer number (1754460).

Almost surely, 2^109431210 is an apocalyptic number.

109431210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 109431210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168428160).

109431210 is an abundant number, since it is smaller than the sum of its proper divisors (227425110).

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

109431210 is a wasteful number, since it uses less digits than its factorization.

109431210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221 (or 214 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 109431210 is about 10460.9373384989. The cubic root of 109431210 is about 478.3147061290.

The spelling of 109431210 in words is "one hundred nine million, four hundred thirty-one thousand, two hundred ten".