109709312 has 24 divisors (see below), whose sum is σ = 219369150. Its totient is φ = 54853632.

The previous prime is 109709309. The next prime is 109709357. The reversal of 109709312 is 213907901.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 106832896 + 2876416 = 10336^2 + 1696^2 .

It is a super-2 number, since 2×109709312² = 24072266279026688, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24737 + ... + 28832.

Almost surely, 2^109709312 is an apocalyptic number.

It is an amenable number.

109709312 is a deficient number, since it is larger than the sum of its proper divisors (109659838).

109709312 is an frugal number, since it uses more digits than its factorization.

109709312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53591 (or 53571 counting only the distinct ones).

The product of its (nonzero) digits is 3402, while the sum is 32.

The square root of 109709312 is about 10474.2213075722. The cubic root of 109709312 is about 478.7195502679.

The spelling of 109709312 in words is "one hundred nine million, seven hundred nine thousand, three hundred twelve".