140223434453 has 2 divisors, whose sum is σ = 140223434454. Its totient is φ = 140223434452.

The previous prime is 140223434431. The next prime is 140223434471. The reversal of 140223434453 is 354434322041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 137616515089 + 2606919364 = 370967^2 + 51058^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140223434453 is a prime.

It is a super-2 number, since 2×140223434453² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140223434413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70111717226 + 70111717227.

It is an arithmetic number, because the mean of its divisors is an integer number (70111717227).

Almost surely, 2^140223434453 is an apocalyptic number.

It is an amenable number.

140223434453 is a deficient number, since it is larger than the sum of its proper divisors (1).

140223434453 is an equidigital number, since it uses as much as digits as its factorization.

140223434453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 138240, while the sum is 35.

Adding to 140223434453 its reverse (354434322041), we get a palindrome (494657756494).

The spelling of 140223434453 in words is "one hundred forty billion, two hundred twenty-three million, four hundred thirty-four thousand, four hundred fifty-three".