140923823 has 2 divisors, whose sum is σ = 140923824. Its totient is φ = 140923822.

The previous prime is 140923819. The next prime is 140923837. The reversal of 140923823 is 328329041.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 140923823 - 2² = 140923819 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 140923823.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140923843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70461911 + 70461912.

It is an arithmetic number, because the mean of its divisors is an integer number (70461912).

Almost surely, 2^140923823 is an apocalyptic number.

140923823 is a deficient number, since it is larger than the sum of its proper divisors (1).

140923823 is an equidigital number, since it uses as much as digits as its factorization.

140923823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 140923823 is about 11871.1340233358. The cubic root of 140923823 is about 520.3890370259.

The spelling of 140923823 in words is "one hundred forty million, nine hundred twenty-three thousand, eight hundred twenty-three".