140223315697 has 4 divisors (see below), whose sum is σ = 141798858660. Its totient is φ = 138647772736.

The previous prime is 140223315689. The next prime is 140223315731. The reversal of 140223315697 is 796513322041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 796513322041 = 577 ⋅1380439033.

It can be written as a sum of positive squares in 2 ways, for example, as 50729003361 + 89494312336 = 225231^2 + 299156^2 .

It is a cyclic number.

It is not a de Polignac number, because 140223315697 - 2³ = 140223315689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140223313697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 787771348 + ... + 787771525.

It is an arithmetic number, because the mean of its divisors is an integer number (35449714665).

Almost surely, 2^140223315697 is an apocalyptic number.

It is an amenable number.

140223315697 is a deficient number, since it is larger than the sum of its proper divisors (1575542963).

140223315697 is an equidigital number, since it uses as much as digits as its factorization.

140223315697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1575542962.

The product of its (nonzero) digits is 272160, while the sum is 43.

The spelling of 140223315697 in words is "one hundred forty billion, two hundred twenty-three million, three hundred fifteen thousand, six hundred ninety-seven".