109142231 has 4 divisors (see below), whose sum is σ = 119064264. Its totient is φ = 99220200.

The previous prime is 109142219. The next prime is 109142249. The reversal of 109142231 is 132241901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132241901 = 11 ⋅12021991.

It is a cyclic number.

It is not a de Polignac number, because 109142231 - 2¹⁴ = 109125847 is a prime.

It is a super-2 number, since 2×109142231² = 23824053175314722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 109142197 and 109142206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109142731) 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, 4961000 + ... + 4961021.

It is an arithmetic number, because the mean of its divisors is an integer number (29766066).

Almost surely, 2^109142231 is an apocalyptic number.

109142231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

109142231 is a deficient number, since it is larger than the sum of its proper divisors (9922033).

109142231 is an equidigital number, since it uses as much as digits as its factorization.

109142231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9922032.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 109142231 is about 10447.1159178024. The cubic root of 109142231 is about 477.8933005892.

The spelling of 109142231 in words is "one hundred nine million, one hundred forty-two thousand, two hundred thirty-one".