109351381 has 4 divisors (see below), whose sum is σ = 109421452. Its totient is φ = 109281312.

The previous prime is 109351379. The next prime is 109351399. The reversal of 109351381 is 183153901.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16402500 + 92948881 = 4050^2 + 9641^2 .

It is a cyclic number.

It is not a de Polignac number, because 109351381 - 2¹ = 109351379 is a prime.

It is a super-2 number, since 2×109351381² = 23915449053214322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109351181) 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, 32640 + ... + 35833.

It is an arithmetic number, because the mean of its divisors is an integer number (27355363).

Almost surely, 2^109351381 is an apocalyptic number.

It is an amenable number.

109351381 is a deficient number, since it is larger than the sum of its proper divisors (70071).

109351381 is an equidigital number, since it uses as much as digits as its factorization.

109351381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70070.

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 109351381 is about 10457.1210665269. The cubic root of 109351381 is about 478.1983691984.

The spelling of 109351381 in words is "one hundred nine million, three hundred fifty-one thousand, three hundred eighty-one".