140233109 has 4 divisors (see below), whose sum is σ = 140851104. Its totient is φ = 139615116.

The previous prime is 140233099. The next prime is 140233123. The reversal of 140233109 is 901332041.

140233109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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: 901332041 = 2957 ⋅304813.

It is a cyclic number.

It is not a de Polignac number, because 140233109 - 2⁸ = 140232853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140233409) 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, 308657 + ... + 309110.

It is an arithmetic number, because the mean of its divisors is an integer number (35212776).

Almost surely, 2^140233109 is an apocalyptic number.

It is an amenable number.

140233109 is a deficient number, since it is larger than the sum of its proper divisors (617995).

140233109 is an equidigital number, since it uses as much as digits as its factorization.

140233109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617994.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 140233109 is about 11842.0061222751. The cubic root of 140233109 is about 519.5374449282.

The spelling of 140233109 in words is "one hundred forty million, two hundred thirty-three thousand, one hundred nine".