140223431444623 has 2 divisors, whose sum is σ = 140223431444624. Its totient is φ = 140223431444622.

The previous prime is 140223431444599. The next prime is 140223431444687. The reversal of 140223431444623 is 326444134322041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 140223431444623 - 2⁴¹ = 138024408189071 is a prime.

It is a super-2 number, since 2×140223431444623² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 140223431444623.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140223435444623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70111715722311 + 70111715722312.

It is an arithmetic number, because the mean of its divisors is an integer number (70111715722312).

Almost surely, 2^{140223431444623} is an apocalyptic number.

140223431444623 is a deficient number, since it is larger than the sum of its proper divisors (1).

140223431444623 is an equidigital number, since it uses as much as digits as its factorization.

140223431444623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1327104, while the sum is 43.

Adding to 140223431444623 its reverse (326444134322041), we get a palindrome (466667565766664).

The spelling of 140223431444623 in words is "one hundred forty trillion, two hundred twenty-three billion, four hundred thirty-one million, four hundred forty-four thousand, six hundred twenty-three".