109240321 has 4 divisors (see below), whose sum is σ = 109489600. Its totient is φ = 108991044.

The previous prime is 109240309. The next prime is 109240337. The reversal of 109240321 is 123042901.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 123042901 = 5507 ⋅22343.

It is a cyclic number.

It is not a de Polignac number, because 109240321 - 2⁵ = 109240289 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 109240292 and 109240301.

It is not an unprimeable number, because it can be changed into a prime (109240301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123981 + ... + 124858.

It is an arithmetic number, because the mean of its divisors is an integer number (27372400).

Almost surely, 2^109240321 is an apocalyptic number.

It is an amenable number.

109240321 is a deficient number, since it is larger than the sum of its proper divisors (249279).

109240321 is an equidigital number, since it uses as much as digits as its factorization.

109240321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249278.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 109240321 is about 10451.8094605671. The cubic root of 109240321 is about 478.0364242827.

It can be divided in two parts, 109240 and 321, that added together give a square (109561 = 331²).

The spelling of 109240321 in words is "one hundred nine million, two hundred forty thousand, three hundred twenty-one".