140351623 has 2 divisors, whose sum is σ = 140351624. Its totient is φ = 140351622.

The previous prime is 140351621. The next prime is 140351641. The reversal of 140351623 is 326153041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 140351623 - 2¹ = 140351621 is a prime.

Together with 140351621, 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 (140351621) 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 as a sum of consecutive naturals, namely, 70175811 + 70175812.

It is an arithmetic number, because the mean of its divisors is an integer number (70175812).

Almost surely, 2^140351623 is an apocalyptic number.

140351623 is a deficient number, since it is larger than the sum of its proper divisors (1).

140351623 is an equidigital number, since it uses as much as digits as its factorization.

140351623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 140351623 is about 11847.0090318190. The cubic root of 140351623 is about 519.6837611201.

The spelling of 140351623 in words is "one hundred forty million, three hundred fifty-one thousand, six hundred twenty-three".