109231290 has 288 divisors, whose sum is σ = 368769024. Its totient is φ = 22256640.

The previous prime is 109231277. The next prime is 109231319. The reversal of 109231290 is 92132901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 2324047 + ... + 2324093.

It is an arithmetic number, because the mean of its divisors is an integer number (1280448).

Almost surely, 2^109231290 is an apocalyptic number.

109231290 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 109231290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184384512).

109231290 is an abundant number, since it is smaller than the sum of its proper divisors (259537734).

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

109231290 is a wasteful number, since it uses less digits than its factorization.

109231290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122 (or 112 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 109231290 is about 10451.3774211823. The cubic root of 109231290 is about 478.0232506795.

The spelling of 109231290 in words is "one hundred nine million, two hundred thirty-one thousand, two hundred ninety".