140223434431 has 2 divisors, whose sum is σ = 140223434432. Its totient is φ = 140223434430.

The previous prime is 140223434413. The next prime is 140223434453. The reversal of 140223434431 is 134434322041.

Together with previous prime (140223434413) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140223434431 is a prime.

It is a super-2 number, since 2×140223434431² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 140223434393 and 140223434402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140223434411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70111717215 + 70111717216.

It is an arithmetic number, because the mean of its divisors is an integer number (70111717216).

Almost surely, 2^140223434431 is an apocalyptic number.

140223434431 is a deficient number, since it is larger than the sum of its proper divisors (1).

140223434431 is an equidigital number, since it uses as much as digits as its factorization.

140223434431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 140223434431 its reverse (134434322041), we get a palindrome (274657756472).

The spelling of 140223434431 in words is "one hundred forty billion, two hundred twenty-three million, four hundred thirty-four thousand, four hundred thirty-one".