109521331 has 8 divisors (see below), whose sum is σ = 114430464. Its totient is φ = 104624520.

The previous prime is 109521319. The next prime is 109521337. The reversal of 109521331 is 133125901.

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

It is a cyclic number.

It is not a de Polignac number, because 109521331 - 2⁵ = 109521299 is a prime.

It is a super-2 number, since 2×109521331² = 23989843888023122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 109521296 and 109521305.

It is not an unprimeable number, because it can be changed into a prime (109521337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18340 + ... + 23566.

It is an arithmetic number, because the mean of its divisors is an integer number (14303808).

Almost surely, 2^109521331 is an apocalyptic number.

109521331 is a deficient number, since it is larger than the sum of its proper divisors (4909133).

109521331 is an equidigital number, since it uses as much as digits as its factorization.

109521331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6161.

The product of its (nonzero) digits is 810, while the sum is 25.

The square root of 109521331 is about 10465.2439532005. The cubic root of 109521331 is about 478.4459738963.

The spelling of 109521331 in words is "one hundred nine million, five hundred twenty-one thousand, three hundred thirty-one".