109987331 has 16 divisors (see below), whose sum is σ = 119099520. Its totient is φ = 101543040.

The previous prime is 109987313. The next prime is 109987393. The reversal of 109987331 is 133789901.

It is a de Polignac number, because none of the positive numbers 2^k-109987331 is a prime.

It is a super-2 number, since 2×109987331² = 24194425961007122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109987301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 299510 + ... + 299876.

It is an arithmetic number, because the mean of its divisors is an integer number (7443720).

Almost surely, 2^109987331 is an apocalyptic number.

109987331 is a deficient number, since it is larger than the sum of its proper divisors (9112189).

109987331 is an frugal number, since it uses more digits than its factorization.

109987331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479 (or 445 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 41.

The square root of 109987331 is about 10487.4844934331. The cubic root of 109987331 is about 479.1235903036.

The spelling of 109987331 in words is "one hundred nine million, nine hundred eighty-seven thousand, three hundred thirty-one".