140223434231 has 4 divisors (see below), whose sum is σ = 147603615000. Its totient is φ = 132843253464.

The previous prime is 140223434209. The next prime is 140223434249. The reversal of 140223434231 is 132434322041.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 140223434231 - 2⁶ = 140223434167 is a prime.

It is a super-2 number, since 2×140223434231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140223434194 and 140223434203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140223434291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3690090356 + ... + 3690090393.

It is an arithmetic number, because the mean of its divisors is an integer number (36900903750).

Almost surely, 2^140223434231 is an apocalyptic number.

140223434231 is a deficient number, since it is larger than the sum of its proper divisors (7380180769).

140223434231 is an equidigital number, since it uses as much as digits as its factorization.

140223434231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7380180768.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 140223434231 its reverse (132434322041), we get a palindrome (272657756272).

The spelling of 140223434231 in words is "one hundred forty billion, two hundred twenty-three million, four hundred thirty-four thousand, two hundred thirty-one".