140634323 has 4 divisors (see below), whose sum is σ = 140679528. Its totient is φ = 140589120.

The previous prime is 140634317. The next prime is 140634331. The reversal of 140634323 is 323436041.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 323436041 = 1031 ⋅313711.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140634323 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140634292 and 140634301.

It is not an unprimeable number, because it can be changed into a prime (140634313) 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 3 ways as a sum of consecutive naturals, for example, 17561 + ... + 24282.

It is an arithmetic number, because the mean of its divisors is an integer number (35169882).

Almost surely, 2^140634323 is an apocalyptic number.

140634323 is a deficient number, since it is larger than the sum of its proper divisors (45205).

140634323 is an equidigital number, since it uses as much as digits as its factorization.

140634323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45204.

The product of its (nonzero) digits is 5184, while the sum is 26.

The square root of 140634323 is about 11858.9343113115. The cubic root of 140634323 is about 520.0324474329.

The spelling of 140634323 in words is "one hundred forty million, six hundred thirty-four thousand, three hundred twenty-three".