140171623 has 2 divisors, whose sum is σ = 140171624. Its totient is φ = 140171622.

The previous prime is 140171621. The next prime is 140171657. The reversal of 140171623 is 326171041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 140171623 - 2¹ = 140171621 is a prime.

Together with 140171621, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140171621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70085811 + 70085812.

It is an arithmetic number, because the mean of its divisors is an integer number (70085812).

Almost surely, 2^140171623 is an apocalyptic number.

140171623 is a deficient number, since it is larger than the sum of its proper divisors (1).

140171623 is an equidigital number, since it uses as much as digits as its factorization.

140171623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 140171623 is about 11839.4097403545. The cubic root of 140171623 is about 519.4615024506.

The spelling of 140171623 in words is "one hundred forty million, one hundred seventy-one thousand, six hundred twenty-three".