140032445431 has 4 divisors (see below), whose sum is σ = 140034943792. Its totient is φ = 140029947072.

The previous prime is 140032445387. The next prime is 140032445477. The reversal of 140032445431 is 134544230041.

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 140032445431 - 2¹³ = 140032437239 is a prime.

It is a super-2 number, since 2×140032445431² (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 = 140032445393 and 140032445402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140032445731) 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, 1163130 + ... + 1277863.

It is an arithmetic number, because the mean of its divisors is an integer number (35008735948).

Almost surely, 2^140032445431 is an apocalyptic number.

140032445431 is a deficient number, since it is larger than the sum of its proper divisors (2498361).

140032445431 is an equidigital number, since it uses as much as digits as its factorization.

140032445431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2498360.

The product of its (nonzero) digits is 23040, while the sum is 31.

Adding to 140032445431 its reverse (134544230041), we get a palindrome (274576675472).

The spelling of 140032445431 in words is "one hundred forty billion, thirty-two million, four hundred forty-five thousand, four hundred thirty-one".