109891315 has 32 divisors (see below), whose sum is σ = 143700480. Its totient is φ = 80371200.

The previous prime is 109891303. The next prime is 109891321. The reversal of 109891315 is 513198901.

It is a happy number.

It is not a de Polignac number, because 109891315 - 2⁵ = 109891283 is a prime.

It is a super-2 number, since 2×109891315² = 24152202224858450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 790516 + ... + 790654.

It is an arithmetic number, because the mean of its divisors is an integer number (4490640).

Almost surely, 2^109891315 is an apocalyptic number.

109891315 is a deficient number, since it is larger than the sum of its proper divisors (33809165).

109891315 is a wasteful number, since it uses less digits than its factorization.

109891315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363.

The product of its (nonzero) digits is 9720, while the sum is 37.

The square root of 109891315 is about 10482.9058471399. The cubic root of 109891315 is about 478.9841290180.

The spelling of 109891315 in words is "one hundred nine million, eight hundred ninety-one thousand, three hundred fifteen".