109251321 has 8 divisors (see below), whose sum is σ = 147720384. Its totient is φ = 71808240.

The previous prime is 109251319. The next prime is 109251371. The reversal of 109251321 is 123152901.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 109251321 - 2¹ = 109251319 is a prime.

It is a super-2 number, since 2×109251321² = 23871702280490082, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 109251291 and 109251300.

It is not an unprimeable number, because it can be changed into a prime (109251371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256246 + ... + 256671.

It is an arithmetic number, because the mean of its divisors is an integer number (18465048).

Almost surely, 2^109251321 is an apocalyptic number.

It is an amenable number.

109251321 is a deficient number, since it is larger than the sum of its proper divisors (38469063).

109251321 is an equidigital number, since it uses as much as digits as its factorization.

109251321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512991.

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 109251321 is about 10452.3356719922. The cubic root of 109251321 is about 478.0524691037.

It can be divided in two parts, 10925 and 1321, that added together give a triangular number (12246 = T₁₅₆).

The spelling of 109251321 in words is "one hundred nine million, two hundred fifty-one thousand, three hundred twenty-one".