109312157240 has 128 divisors (see below), whose sum is σ = 291757939200. Its totient is φ = 36335761920.

The previous prime is 109312157239. The next prime is 109312157261. The reversal of 109312157240 is 42751213901.

It is a self number, because there is not a number n which added to its sum of digits gives 109312157240.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 496391 + ... + 681929.

It is an arithmetic number, because the mean of its divisors is an integer number (2279358900).

Almost surely, 2^109312157240 is an apocalyptic number.

109312157240 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 109312157240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145878969600).

109312157240 is an abundant number, since it is smaller than the sum of its proper divisors (182445781960).

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

109312157240 is a wasteful number, since it uses less digits than its factorization.

109312157240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185677 (or 185673 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 35.

The spelling of 109312157240 in words is "one hundred nine billion, three hundred twelve million, one hundred fifty-seven thousand, two hundred forty".